47 CFR Part 27 — Miscellaneous Wireless Communications Services

PART 27—MISCELLANEOUS WIRELESS COMMUNICATIONS SERVICES Authority: 47 U.S.C. 154, 301, 302a, 303, 307, 309, 332, 336, 337, 1403, 1404, 1451, and 1452, unless otherwise noted. Source: 62 FR 9658, Mar. 3, 1997, unless otherwise noted. Subpart A—General Information § 27.1 [Reserved] § 27.2 Permissible communications. (a) Miscellaneous wireless communications services. (b) 775-776 MHz and 805-806 MHz bands. (c) Satellite DARS. (d) 2000-2020 MHz and 2180-2200 MHz bands. (e) 716-722 MHz and 722-728 MHz bands. [65 FR 3144, Jan. 20, 2000, as amended at 65 FR 17601, Apr. 4, 2000; 72 FR 48843, Aug. 24, 2007; 78 FR 8267, Feb. 5, 2013; 78 FR 66316, Nov. 5, 2013] § 27.3 [Reserved] § 27.4 Terms and definitions. Link to an amendment published at 91 FR 48741, July 31, 2026. 3.45 GHz Service. 3.7 GHz Service. 600 MHz service. Advanced Wireless Service (AWS). Affiliate. Assigned frequency. Attended operation. Authorized bandwidth. Average terrain. Base station. Booster service area. Broadband Radio Service (BRS). Broadcast services. i.e., Commence operations. Documented complaint. Educational Broadband Service (EBS). Effective Radiated Power (ERP) (in a given direction). Equivalent Isotropically Radiated Power (EIRP). Fixed service. Fixed station. Land mobile service. Land mobile station. Land station. Lower Band Segment (LBS). Middle Band Segment (MBS). Mobile service. Mobile station. National Geodetic Reference System (NGRS). Point-to-point Broadband station. Portable device. Post-auction transition period. Public Safety Broadband Licensee. Radiodetermination. Radiolocation. Radiolocation land station. Radiolocation mobile station. Radionavigation. Remote control. Satellite Digital Audio Radio Service (satellite DARS). Sectorization. Spectrum Act. Spectrum Act Studio to transmitter link (STL). Temporary fixed broadband station. Time division multiple access (TDMA). Time division multiplexing (TDM). Unattended operation. Universal Licensing System. Upper 700 MHz D Block license. Upper Band Segment (UBS). Wireless communications service. [62 FR 9658, Mar. 3, 1997] Editorial Note: For Federal Register www.govinfo.gov. § 27.5 Frequencies. Link to an amendment published at 91 FR 48741, July 31, 2026. (a) 2305-2320 MHz and 2345-2360 MHz bands. (1) Two paired channel blocks are available for assignment on a Major Economic Area basis as follows: Block A: 2305-2310 and 2350-2355 MHz; and Block B: 2310-2315 and 2355-2360 MHz. (2) Two unpaired channel blocks are available for assignment on a Regional Economic Area Grouping basis as follows: Block C: 2315-2320 MHz; and Block D: 2345-2350 MHz. (b) 746-758 MHz, 775-788 MHz, and 805-806 MHz bands. (1) Two paired channels of 1 megahertz each are available for assignment in Block A in the 757-758 MHz and 787-788 MHz bands. (2) Two paired channels of 1 megahertz each are available for assignment in Block B in the 775-776 MHz and 805-806 MHz bands. (3) Two paired channels of 11 megahertz each are available for assignment in Block C in the 746-757 MHz and 776-787 MHz bands. In the event that no licenses for two channels in this Block C are assigned based on the results of the first auction in which such licenses were offered because the auction results do not satisfy the applicable reserve price, the spectrum in the 746-757 MHz and 776-787 MHz bands will instead be made available for assignment at a subsequent auction as follows: (i) Two paired channels of 6 megahertz each available for assignment in Block C1 in the 746-752 MHz and 776-782 MHz bands. (ii) Two paired channels of 5 megahertz each available for assignment in Block C2 in the 752-757 MHz and 782-787 MHz bands. (c) 698-746 MHz band. (1) Three paired channel blocks of 12 megahertz each are available for assignment as follows: Block A: 698-704 MHz and 728-734 MHz; Block B: 704-710 MHz and 734-740 MHz; and Block C: 710-716 MHz and 740-746 MHz. (2) Two unpaired channel blocks of 6 megahertz each are available for assignment as follows: Block D: 716-722 MHz; and Block E: 722-728 MHz. (d) 1390-1392 MHz band. (e) The paired 1392-1395 and 1432-1435 MHz bands. (f) 1670-1675 MHz band. (g) [Reserved] (h) 1710-1755 MHz, 2110-2155 MHz, 1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz bands. (1) Four paired channel blocks of 10 megahertz each are available for assignment as follows: Block A: 1710-1720 MHz and 2110-2120 MHz; Block B: 1720-1730 MHz and 2120-2130 MHz; Block F: 1745-1755 MHz and 2145-2155 MHz; and Block J: 1770-1780 MHz and 2170-2180 MHz. (2) Six paired channel blocks of 5 megahertz each are available for assignment as follows: Block C: 1730-1735 MHz and 2130-2135 MHz; Block D: 1735-1740 MHz and 2135-2140 MHz; Block E: 1740-1745 MHz and 2140-2145 MHz; Block G: 1755-1760 MHz and 2155-2160 MHz; Block H: 1760-1765 MHz and 2160-2165 MHz; and Block I: 1765-1770 MHz and 2165-2170 MHz. (3) One unpaired block of 5 megahertz and one unpaired block of 10 megahertz each are available for assignment as follows: Block A1: 1695-1700 MHz Block B1: 1700-1710 MHz. Note to paragraph ( h Licenses to operate in the 1695-1710 MHz and 1755-1780 MHz bands are subject to the condition that the licensee must not cause harmful interference to an incumbent Federal entity relocating from these bands under an approved Transition Plan. This condition remains in effect until NTIA terminates the applicable authorization of the incumbent Federal entity. (i) Frequency assignments for the BRS/EBS band. (1) [Reserved] (2) Post transition frequency assignments. (i) Lower Band Segment (LBS): The following channels shall constitute the Lower Band Segment: BRS Channel 1: 2496-2502 MHz or 2150-2156 MHz EBS Channel A1: 2502-2507.5 MHz EBS Channel A2: 2507.5-2513 MHz EBS Channel A3: 2513-2518.5 MHz EBS Channel B1: 2518.5-2524 MHz EBS Channel B2: 2524-2529.5 MHz EBS Channel B3: 2529.5-2535 MHz EBS Channel C1: 2535-2540.5 MHz EBS Channel C2: 2540.5-2546 MHz EBS Channel C3: 2546-2551.5 MHz EBS Channel D1: 2551.5-2557 MHz EBS Channel D2: 2557-2562.5 MHz EBS Channel D3: 2562.5-2568 MHz EBS Channel JA1: 2568.00000-2568.33333 MHz EBS Channel JA2: 2568.33333-2568.66666 MHz EBS Channel JA3: 2568.66666-2569.00000 MHz EBS Channel JB1: 2569.00000-2569.33333 MHz EBS Channel JB2: 2569.33333-2569.66666 MHz EBS Channel JB3: 2569.66666-2570.00000 MHz EBS Channel JC1: 2570.00000-2570.33333 MHz EBS Channel JC2: 2570.33333-2570.66666 MHz EBS Channel JC3: 2570.66666-2571.00000 MHz EBS Channel JD1: 2571.00000-2571.33333 MHz EBS Channel JD2: 2571.33333-2571.66666 MHz EBS Channel JD3: 2571.66666-2572.00000 MHz (ii) Middle Band Segment (MBS): The following channels shall constitute the Middle Band Segment: EBS Channel A4: 2572-2578 MHz EBS Channel B4: 2578-2584 MHz EBS Channel C4: 2584-2590 MHz EBS Channel D4: 2590-2596 MHz EBS Channel G4: 2596-2602 MHz BRS/EBS Channel F4: 2602-2608 MHz BRS/EBS Channel E4: 2608-2614 MHz (iii) Upper Band Segment (UBS): The following channels shall constitute the Upper Band Segment: BRS Channel KH1: 2614.00000-2614.33333 MHz. BRS Channel KH2: 2614.33333-2614.66666 MHz. BRS Channel KH3: 2614.66666-2615.00000 MHz. EBS Channel KG1: 2615.00000-2615.33333 MHz. EBS Channel KG2: 2615.33333-2615.66666 MHz. EBS Channel KG3: 2615.66666-2616.00000 MHz. BRS Channel KF1: 2616.00000-2616.33333 MHz. BRS Channel KF2: 2616.33333-2616.66666 MHz. BRS Channel KF3: 2616.66666-2617.00000 MHz. BRS Channel KE1: 2617.00000-2617.33333 MHz. BRS Channel KE2: 2617.33333-2617.66666 MHz. BRS Channel KE3: 2617.66666-2618.00000 MHz. BRS Channel 2: 2618-2624 MHz or 2156-2162 MHz. BRS Channel 2A: 2618-2624 MHz or 2156-2160 MHz. BRS/EBS Channel E1: 2624-2629.5 MHz. BRS/EBS Channel E2: 2629.5-2635 MHz. BRS/EBS Channel E3: 2635-2640.5 MHz. BRS/EBS Channel F1: 2640.5-2646 MHz. BRS/EBS Channel F2: 2646-2651.5 MHz. BRS/EBS Channel F3: 2651.5-2657 MHz. BRS Channel H1: 2657-2662.5 MHz. BRS Channel H2: 2662.5-2668 MHz. BRS Channel H3: 2668-2673.5 MHz. EBS Channel G1: 2673.5-2679 MHz. EBS Channel G2: 2679-2684.5 MHz. EBS Channel G3: 2684.5-2690 MHz. Note to paragraph ( i No 125 kHz channels are provided for channels in operation in this service. The 125 kHz channels previously associated with these channels have been reallocated to Channel G3 in the upper band segment. (3)-(5) [Reserved] (j) 2000-2020 MHz and 2180-2200 MHz bands. (1) Two paired channel blocks of 10 megahertz each are available for assignment as follows: Block A: 2000-2010 MHz and 2180-2190 MHz; and Block B: 2010-2020 MHz and 2190-2200 MHz. (2) [Reserved] (k) 1915-1920 MHz and 1995-2000 MHz bands. (l) 600 MHz band. Block A: Block B: Block C: Block D: Block E: Block F: Block G: (m) 3700-3980 MHz band. see (n) 900 MHz broadband. (o) 3450-3550 MHz band. see [62 FR 9658, Mar. 3, 1997] Editorial Note: For Federal Register www.govinfo.gov. § 27.6 Service areas. Link to an amendment published at 91 FR 48742, July 31, 2026. (a) Composition of service areas. See www.fcc.gov/auctions (1) The 52 MEAs are composed of one or more EAs and the 12 REAGs are composed of one or more MEAs, as defined in the table below: REAGs MEAs EAs 1 (Northeast) 1 (Boston) 1-3. 2 (New York City) 4-7, 10. 3 (Buffalo) 8. 4 (Philadelphia) 11-12. 2 (Southeast) 5 (Washington) 13-14. 6 (Richmond) 15-17, 20. 7 (Charlotte-Greensboro-Greenville-Raleigh) 18-19, 21-26, 41-42, 46. 8 (Atlanta) 27-28, 37-40, 43. 9 (Jacksonville) 29, 35. 10 (Tampa-St. Petersburg-Orlando) 30, 33-34. 11 (Miami) 31-32. 3 (Great Lakes) 12 (Pittsburgh) 9, 52-53. 13 (Cincinnati-Dayton) 48-50. 14 (Columbus) 51. 15 (Cleveland) 54-55. 16 (Detroit) 56-58, 61-62. 17 (Milwaukee) 59-60, 63, 104-105, 108. 18 (Chicago) 64-66, 68, 97, 101. 19 (Indianapolis) 67. 20 (Minneapolis-St. Paul) 106-107, 109-114, 116. 21 (Des Moines-Quad Cities) 100, 102-103, 117. 4 (Mississippi Valley) 22 (Knoxville) 44-45. 23 (Louisville-Lexington-Evansville) 47, 69-70, 72. 24 (Birmingham) 36, 74, 78-79. 25 (Nashville) 71. 26 (Memphis-Jackson) 73, 75-77. 27 (New Orleans-Baton Rouge) 80-85. 28 (Little Rock) 90-92, 95. 29 (Kansas City) 93, 99, 123. 30 (St. Louis) 94, 96, 98. 5 (Central) 31 (Houston) 86-87, 131. 32 (Dallas-Fort Worth) 88-89, 127-130, 135, 137-138. 33 (Denver) 115, 140-143. 34 (Omaha) 118-121. 35 (Wichita) 122. 36 (Tulsa) 124. 37 (Oklahoma City) 125-126. 38 (San Antonio) 132-134. 39 (El Paso-Albuquerque) 136, 139, 155-157. 40 (Phoenix) 154, 158-159. 6 (West) 41 (Spokane-Billings) 144-147, 168. 42 (Salt Lake City) 148-150, 152. 43 (San Francisco-Oakland-San Jose) 151, 162-165. 44 (Los Angeles-San Diego) 153, 160-161. 45 (Portland) 166-167. 46 (Seattle) 169-170. 7 (Alaska) 47 (Alaska) 171. 8 (Hawaii) 48 (Hawaii) 172. 9 (Guam and the Northern Mariana Islands) 49 (Guam and the Northern Mariana Islands) 173. 10 (Puerto Rico and U.S. Virgin Islands) 50 (Puerto Rico and U.S. Virgin Islands) 174. 11 (American Samoa) 51 (American Samoa) 175. 12 (Gulf of Mexico) 52 (Gulf of Mexico) 176. (2) The Gulf of Mexico EA extends from 12 nautical miles off the U.S. Gulf coast outward into the Gulf. (b) 746-758 MHz, 775-788 MHz, and 805-806 MHz bands. (1) Service areas for Block A in the 757-758 MHz and 787-788 MHz bands and Block B in the 775-776 MHz and 805-806 MHz bands are based on Major Economic Areas (MEAs), as defined in paragraphs (a)(1) and (a)(2) of this section. (2) Service areas for Block C in the 746-757 MHz and 776-787 MHz bands are based on Regional Economic Area Groupings (REAGs) as defined by paragraph (a) of this section. In the event that no licenses with respect to service areas for Block C in the 746-757 MHz and 776-787 MHz bands are assigned based on the results of the first auction in which such licenses are offered because the auction results do not satisfy the applicable reserve price, then service areas for the spectrum at 746-757 MHz and 776-787 MHz will instead be available for assignment as follows: (i) Service areas for Block C1 in the 746-752 MHz and 776-782 MHz bands are based on Economic Areas (EAs) as defined in paragraph (a) of this section. (ii) Service areas for Block C2 in the 752-757 MHz and 782-787 MHz bands are based on Regional Economic Area Groupings (REAGs) as defined by paragraph (a) of this section. (c) 698-746 MHz band. (1) Service areas for Block A in the 698-704 MHz and 728-734 MHz bands and Block E in the 722-728 MHz band are based on Economic Areas (EAs) as defined in paragraph (a) of this section. (2) Service areas for Block B in the 704-710 MHz and 734-740 MHz bands and Block C in the 710-716 MHz and 740-746 MHz bands are based on cellular markets comprising Metropolitan Statistical Areas (MSAs) and Rural Service Areas (RSAs) as defined by Public Notice Report No. CL-92-40 “Common Carrier Public Mobile Services Information, Cellular MSA/RSA Markets and Counties,” dated January 24, 1992, DA 92-109, 7 FCC Rcd 742 (1992), with the following modifications: (i) The service areas of cellular markets that border the U.S. coastline of the Gulf of Mexico extend 12 nautical miles from the U.S. Gulf coastline. (ii) The service area of cellular market 306 that comprises the water area of the Gulf of Mexico extends from 12 nautical miles off the U.S. Gulf coast outward into the Gulf. (3) Service areas for Block D in the 716-722 MHz band are based on Economic Area Groupings (EAGs) as defined by the Federal Communications Commission. See 62 FR 15978 (April 3, 1997) extended with the Gulf of Mexico. See also paragraphs (a)(1) and (2) of this section and 62 FR 9636 (March 3, 1997), in which the Commission created an additional four economic area-like areas for a total of 176. Maps of the EAGs and the Federal Register https://www.fcc.gov/oet/info/maps/areas/ (i) There are 6 EAGs, which are composed of multiple EAs as defined in the table below: Economic area groupings Name Economic areas EAG001 Northeast 1-11, 54. EAG002 Mid-Atlantic 12-26, 41, 42, 44-53, 70. EAG003 Southeast 27-40, 43, 69, 71-86, 88-90, 95, 96, 174, 176 (part). EAG004 Great Lakes 55-68, 97, 100-109. EAG005 Central/Mountain 87, 91-94, 98, 99, 110-146, 148, 149, 152, 154-159, 176 (part). EAG006 Pacific 147, 150, 151, 153, 160-173, 175. Note 1 to paragraph ( c i Economic Area Groupings are defined by the Federal Communications Commission; see Note 2 to paragraph ( c i Economic Areas are defined by the Regional Economic Analysis Division, Bureau of Economic Analysis, U.S. Department of Commerce February 1995 and extended by the Federal Communications Commission, see (ii) For purposes of paragraph (c)(3)(i) of this section, EA 176 (the Gulf of Mexico) will be divided between EAG003 (the Southeast EAG) and EAG005 (the Central/Mountain EAG) in accordance with the configuration of the Eastern/Central and Western Planning Area established by the Mineral Management Services Bureau of the Department of the Interior (MMS). That portion of EA 176 contained in the Eastern and Central Planning Areas as defined by MMS will be included in EAG003; that portion of EA 176 contained in the Western Planning Area as defined by MMS will be included in EAG005. Maps of these areas may be found on the MMS Web site: http://www.gomr.mms.gov/homepg/offshore/offshore.html. (d) 1390-1392 MHz band. (e) The paired 1392-1395 and 1432-1435 MHz bands. (f) 1670-1675 MHz band. (g) [Reserved] (h) 1710-1755 and 2110-2155 MHz bands. AWS service areas for the 1710-1755 MHz and 2110-2155 MHz bands are as follows: (1) Service areas for Block A (1710-1720 MHz and 2110-2120 MHz) are based on cellular markets comprising Metropolitan Statistical Areas (MSAs) and Rural Service Areas (RSAs) as defined by Public Notice Report No. CL-92-40 “Common Carrier Public Mobile Services Information, Cellular MSA/RSA Markets and Counties,” dated January 24, 1992, DA 92-109, 7 FCC Rcd 742 (1992), with the following modifications: (i) The service areas of cellular markets that border the U.S. coastline of the Gulf of Mexico extend 12 nautical miles from the U.S. Gulf coastline. (ii) The service area of cellular market 306 that comprises the water area of the Gulf of Mexico extends from 12 nautical miles off the U.S. Gulf coast outward into the Gulf. (2) Service areas for Blocks B (1720-1730 MHz and 2120-2130 MHz) and C (1730-1735 MHz and 2130-2135 MHz) are based on Economic Areas (EAs) as defined in paragraph (a) of this section. (3) Service areas for blocks D (1735-1740 MHz and 2135-2140 MHz), E (1740-1745 MHz and 2140-2145 MHz) and F (1745-1755 MHz and 2145-2155 MHz) are based on Regional Economic Area Groupings (REAGs) as defined by paragraph (a) of this section. (i) 2000-2020 MHz and 2180-2200 MHz bands. (j) 1915-1920 MHz and 1995-2000 MHz bands. (k) 1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz bands. (1) Service areas for Block G (1755-1760 MHz and 2155-2160 MHz) are based on cellular markets comprising Metropolitan Statistical Areas (MSAs) and Rural Service Areas (RSAs) as defined by Public Notice Report No. CL-92-40 “Common Carrier Public Mobile Services Information, Cellular MSA/RSA Markets and Counties,” dated January 24, 1992, DA 92-109, 7 FCC Rcd 742 (1992), with the following modifications: (i) The service areas of cellular markets that border the U.S. coastline of the Gulf of Mexico extend 12 nautical miles from the U.S. Gulf coastline. (ii) The service area of cellular market 306 that comprises the water area of the Gulf of Mexico extends from 12 nautical miles off the U.S. Gulf coast outward into the Gulf. (2) Service areas for Blocks H (1760-1765 MHz and 2160-2165 MHz), I (1765-1770 MHz and 2165-2170 MHz), J (1770-1780 MHz and 2170-2180 MHz), A1 (1695-1700 MHz) and B1 (1700-1710 MHz) are based on Economic Areas (EAs) as defined in paragraph (a) of this section. (l) 600 MHz band. Wireless Telecommunications Bureau Provides Details About Partial Economic Areas, (m) 3700-3980 MHz Band. see Wireless Telecommunications Bureau Provides Details About Partial Economic Areas, i.e., Table 3 to Paragraph (m) PEA No. PEA name 42 Honolulu, HI. 212 Anchorage, AK. 264 Kodiak, AK. 298 Fairbanks, AK. 360 Juneau, AK. 412 Puerto Rico. 413 Guam-Northern Mariana Islands. 414 US Virgin Islands. 415 American Samoa. (n) 3450-3550 MHz Band. [62 FR 9658, Mar. 3, 1997] Editorial Note: For Federal Register www.govinfo.gov. § 27.9 Operation of certificated signal boosters. Individuals and non-individuals may operate certificated Consumer Signal Boosters on frequencies regulated under this part provided that such operation complies with all applicable rules under this part and § 20.21 of this chapter. Failure to comply with all applicable rules voids the authority to operate a signal booster. [78 FR 21564, Apr. 11, 2013] Appendix A to Subpart A of Part 27—List of Partial Economic Areas With Corresponding Counties PEA No. Federal County name State 1 09001 Fairfield CT 1 09003 Hartford CT 1 09005 Litchfield CT 1 09007 Middlesex CT 1 09009 New Haven CT 1 09011 New London CT 1 09013 Tolland CT 1 09015 Windham CT 1 34003 Bergen NJ 1 34013 Essex NJ 1 34017 Hudson NJ 1 34019 Hunterdon NJ 1 34021 Mercer NJ 1 34023 Middlesex NJ 1 34025 Monmouth NJ 1 34027 Morris NJ 1 34029 Ocean NJ 1 34031 Passaic NJ 1 34035 Somerset NJ 1 34037 Sussex NJ 1 34039 Union NJ 1 34041 Warren NJ 1 36005 Bronx NY 1 36027 Dutchess NY 1 36047 Kings NY 1 36059 Nassau NY 1 36061 New York NY 1 36071 Orange NY 1 36079 Putnam NY 1 36081 Queens NY 1 36085 Richmond NY 1 36087 Rockland NY 1 36103 Suffolk NY 1 36105 Sullivan NY 1 36111 Ulster NY 1 36119 Westchester NY 1 42025 Carbon PA 1 42069 Lackawanna PA 1 42077 Lehigh PA 1 42079 Luzerne PA 1 42089 Monroe PA 1 42095 Northampton PA 2 06029 Kern CA 2 06037 Los Angeles CA 2 06059 Orange CA 2 06065 Riverside CA 2 06071 San Bernardino CA 2 06079 San Luis Obispo CA 2 06083 Santa Barbara CA 2 06111 Ventura CA 3 17031 Cook IL 3 17043 DuPage IL 3 17063 Grundy IL 3 17089 Kane IL 3 17091 Kankakee IL 3 17093 Kendall IL 3 17097 Lake IL 3 17111 McHenry IL 3 17197 Will IL 3 18091 La Porte IN 3 18089 Lake IN 3 18127 Porter IN 4 06001 Alameda CA 4 06013 Contra Costa CA 4 06041 Marin CA 4 06053 Monterey CA 4 06055 Napa CA 4 06075 San Francisco CA 4 06077 San Joaquin CA 4 06081 San Mateo CA 4 06085 Santa Clara CA 4 06087 Santa Cruz CA 4 06095 Solano CA 4 06097 Sonoma CA 4 06099 Stanislaus CA 5 11001 District of Columbia DC 5 24003 Anne Arundel MD 5 24005 Baltimore MD 5 24510 Baltimore City MD 5 24009 Calvert MD 5 24011 Caroline MD 5 24013 Carroll MD 5 24017 Charles MD 5 24019 Dorchester MD 5 24025 Harford MD 5 24027 Howard MD 5 24029 Kent MD 5 24031 Montgomery MD 5 24033 Prince George's MD 5 24035 Queen Anne's MD 5 24037 St. Mary's MD 5 24041 Talbot MD 5 51510 Alexandria City VA 5 51013 Arlington VA 5 51059 Fairfax VA 5 51600 Fairfax City VA 5 51610 Falls Church City VA 5 51107 Loudoun VA 5 51683 Manassas City VA 5 51685 Manassas Park City VA 5 51153 Prince William VA 6 10001 Kent DE 6 10003 New Castle DE 6 24015 Cecil MD 6 34001 Atlantic NJ 6 34005 Burlington NJ 6 34007 Camden NJ 6 34009 Cape May NJ 6 34011 Cumberland NJ 6 34015 Gloucester NJ 6 34033 Salem NJ 6 42011 Berks PA 6 42017 Bucks PA 6 42029 Chester PA 6 42045 Delaware PA 6 42071 Lancaster PA 6 42091 Montgomery PA 6 42101 Philadelphia PA 7 25001 Barnstable MA 7 25005 Bristol MA 7 25007 Dukes MA 7 25009 Essex MA 7 25017 Middlesex MA 7 25019 Nantucket MA 7 25021 Norfolk MA 7 25023 Plymouth MA 7 25025 Suffolk MA 7 25027 Worcester MA 7 44001 Bristol RI 7 44003 Kent RI 7 44005 Newport RI 7 44007 Providence RI 7 44009 Washington RI 8 48085 Collin TX 8 48113 Dallas TX 8 48121 Denton TX 8 48139 Ellis TX 8 48181 Grayson TX 8 48221 Hood TX 8 48251 Johnson TX 8 48257 Kaufman TX 8 48367 Parker TX 8 48397 Rockwall TX 8 48439 Tarrant TX 8 48497 Wise TX 9 12011 Broward FL 9 12043 Glades FL 9 12051 Hendry FL 9 12061 Indian River FL 9 12085 Martin FL 9 12086 Miami-Dade FL 9 12087 Monroe FL 9 12093 Okeechobee FL 9 12099 Palm Beach FL 9 12111 St. Lucie FL 10 48039 Brazoria TX 10 48071 Chambers TX 10 48157 Fort Bend TX 10 48167 Galveston TX 10 48201 Harris TX 10 48291 Liberty TX 10 48339 Montgomery TX 10 48473 Waller TX 11 13011 Banks GA 11 13013 Barrow GA 11 13035 Butts GA 11 13057 Cherokee GA 11 13059 Clarke GA 11 13063 Clayton GA 11 13067 Cobb GA 11 13085 Dawson GA 11 13089 DeKalb GA 11 13097 Douglas GA 11 13105 Elbert GA 11 13113 Fayette GA 11 13117 Forsyth GA 11 13119 Franklin GA 11 13121 Fulton GA 11 13133 Greene GA 11 13135 Gwinnett GA 11 13137 Habersham GA 11 13139 Hall GA 11 13147 Hart GA 11 13151 Henry GA 11 13157 Jackson GA 11 13159 Jasper GA 11 13187 Lumpkin GA 11 13195 Madison GA 11 13211 Morgan GA 11 13217 Newton GA 11 13219 Oconee GA 11 13221 Oglethorpe GA 11 13223 Paulding GA 11 13241 Rabun GA 11 13247 Rockdale GA 11 13257 Stephens GA 11 13265 Taliaferro GA 11 13297 Walton GA 11 13311 White GA 12 26049 Genesee MI 12 26087 Lapeer MI 12 26093 Livingston MI 12 26099 Macomb MI 12 26125 Oakland MI 12 26155 Shiawassee MI 12 26147 St. Clair MI 12 26161 Washtenaw MI 12 26163 Wayne MI 13 12009 Brevard FL 13 12017 Citrus FL 13 12035 Flagler FL 13 12049 Hardee FL 13 12055 Highlands FL 13 12069 Lake FL 13 12083 Marion FL 13 12095 Orange FL 13 12097 Osceola FL 13 12105 Polk FL 13 12117 Seminole FL 13 12119 Sumter FL 13 12127 Volusia FL 14 39007 Ashtabula OH 14 39019 Carroll OH 14 39029 Columbiana OH 14 39035 Cuyahoga OH 14 39043 Erie OH 14 39055 Geauga OH 14 39077 Huron OH 14 39085 Lake OH 14 39093 Lorain OH 14 39099 Mahoning OH 14 39103 Medina OH 14 39133 Portage OH 14 39151 Stark OH 14 39153 Summit OH 14 39155 Trumbull OH 14 42085 Mercer PA 15 04013 Maricopa AZ 16 53009 Clallam WA 16 53031 Jefferson WA 16 53033 King WA 16 53035 Kitsap WA 16 53053 Pierce WA 16 53061 Snohomish WA 17 27003 Anoka MN 17 27009 Benton MN 17 27019 Carver MN 17 27025 Chisago MN 17 27037 Dakota MN 17 27053 Hennepin MN 17 27123 Ramsey MN 17 27139 Scott MN 17 27141 Sherburne MN 17 27145 Stearns MN 17 27163 Washington MN 17 27171 Wright MN 17 55109 St. Croix WI 18 06073 San Diego CA 19 41003 Benton OR 19 41005 Clackamas OR 19 41007 Clatsop OR 19 41009 Columbia OR 19 41041 Lincoln OR 19 41043 Linn OR 19 41047 Marion OR 19 41051 Multnomah OR 19 41053 Polk OR 19 41057 Tillamook OR 19 41067 Washington OR 19 41071 Yamhill OR 19 53011 Clark WA 19 53015 Cowlitz WA 19 53069 Wahkiakum WA 20 08001 Adams CO 20 08005 Arapahoe CO 20 08013 Boulder CO 20 08014 Broomfield CO 20 08031 Denver CO 20 08035 Douglas CO 20 08047 Gilpin CO 20 08059 Jefferson CO 21 12053 Hernando FL 21 12057 Hillsborough FL 21 12101 Pasco FL 21 12103 Pinellas FL 22 06005 Amador CA 22 06007 Butte CA 22 06011 Colusa CA 22 06017 El Dorado CA 22 06021 Glenn CA 22 06057 Nevada CA 22 06061 Placer CA 22 06067 Sacramento CA 22 06101 Sutter CA 22 06113 Yolo CA 22 06115 Yuba CA 23 42003 Allegheny PA 23 42005 Armstrong PA 23 42007 Beaver PA 23 42019 Butler PA 23 42063 Indiana PA 23 42073 Lawrence PA 23 42125 Washington PA 23 42129 Westmoreland PA 24 17005 Bond IL 24 17027 Clinton IL 24 17121 Marion IL 24 17133 Monroe IL 24 17163 St. Clair IL 24 29071 Franklin MO 24 29099 Jefferson MO 24 29183 St. Charles MO 24 29189 St. Louis MO 24 29510 St. Louis City MO 25 21015 Boone KY 25 21023 Bracken KY 25 21037 Campbell KY 25 21077 Gallatin KY 25 21081 Grant KY 25 21117 Kenton KY 25 21135 Lewis KY 25 21161 Mason KY 25 21191 Pendleton KY 25 39001 Adams OH 25 39015 Brown OH 25 39017 Butler OH 25 39025 Clermont OH 25 39027 Clinton OH 25 39061 Hamilton OH 25 39071 Highland OH 25 39165 Warren OH 26 04015 Mohave AZ 26 32003 Clark NV 27 49011 Davis UT 27 49035 Salt Lake UT 27 49045 Tooele UT 27 49049 Utah UT 27 49057 Weber UT 28 48013 Atascosa TX 28 48029 Bexar TX 28 48091 Comal TX 28 48187 Guadalupe TX 29 12001 Alachua FL 29 12003 Baker FL 29 12007 Bradford FL 29 12019 Clay FL 29 12023 Columbia FL 29 12029 Dixie FL 29 12031 Duval FL 29 12041 Gilchrist FL 29 12047 Hamilton FL 29 12067 Lafayette FL 29 12075 Levy FL 29 12089 Nassau FL 29 12107 Putnam FL 29 12109 St. Johns FL 29 12121 Suwannee FL 29 12125 Union FL 30 20091 Johnson KS 30 20209 Wyandotte KS 30 29037 Cass MO 30 29047 Clay MO 30 29095 Jackson MO 30 29165 Platte MO 30 29177 Ray MO 31 18011 Boone IN 31 18035 Delaware IN 31 18057 Hamilton IN 31 18063 Hendricks IN 31 18081 Johnson IN 31 18095 Madison IN 31 18097 Marion IN 32 21047 Christian KY 32 47021 Cheatham TN 32 47037 Davidson TN 32 47043 Dickson TN 32 47125 Montgomery TN 32 47147 Robertson TN 32 47149 Rutherford TN 32 47165 Sumner TN 32 47187 Williamson TN 32 47189 Wilson TN 33 37053 Currituck NC 33 51550 Chesapeake City VA 33 51620 Franklin City VA 33 51073 Gloucester VA 33 51650 Hampton City VA 33 51093 Isle of Wight VA 33 51095 James City VA 33 51115 Mathews VA 33 51700 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OK 39 40027 Cleveland OK 39 40031 Comanche OK 39 40051 Grady OK 39 40081 Lincoln OK 39 40083 Logan OK 39 40087 McClain OK 39 40109 Oklahoma OK 39 40125 Pottawatomie OK 40 01015 Calhoun AL 40 01073 Jefferson AL 40 01117 Shelby AL 40 01115 St. Clair AL 40 01121 Talladega AL 40 01125 Tuscaloosa AL 40 01127 Walker AL 41 36011 Cayuga NY 41 36017 Chenango NY 41 36023 Cortland NY 41 36025 Delaware NY 41 36043 Herkimer NY 41 36053 Madison NY 41 36065 Oneida NY 41 36067 Onondaga NY 41 36075 Oswego NY 41 36077 Otsego NY 41 36097 Schuyler NY 41 36109 Tompkins NY 42 15001 Hawaii HI 42 15003 Honolulu HI 42 15005 Kalawao HI 42 15007 Kauai HI 42 15009 Maui HI 43 37071 Gaston NC 43 37119 Mecklenburg NC 43 37179 Union NC 44 36037 Genesee NY 44 36051 Livingston NY 44 36055 Monroe NY 44 36069 Ontario NY 44 36073 Orleans NY 44 36099 Seneca NY 44 36101 Steuben NY 44 36117 Wayne NY 44 36121 Wyoming NY 44 36123 Yates NY 45 37063 Durham NC 45 37135 Orange NC 45 37183 Wake NC 46 05005 Baxter AR 46 05009 Boone 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OK 63 40143 Tulsa OK 63 40145 Wagoner OK 64 18039 Elkhart IN 64 18049 Fulton IN 64 18085 Kosciusko IN 64 18087 Lagrange IN 64 18099 Marshall IN 64 18131 Pulaski IN 64 18141 St. Joseph IN 64 18149 Starke IN 64 26021 Berrien MI 64 26027 Cass MI 64 26149 St. Joseph MI 65 12021 Collier FL 65 12071 Lee FL 66 26037 Clinton MI 66 26045 Eaton MI 66 26059 Hillsdale MI 66 26065 Ingham MI 66 26075 Jackson MI 66 26091 Lenawee MI 66 26115 Monroe MI 67 12015 Charlotte FL 67 12027 DeSoto FL 67 12081 Manatee FL 67 12115 Sarasota FL 68 26081 Kent MI 68 26139 Ottawa MI 69 25003 Berkshire MA 69 25011 Franklin MA 69 25013 Hampden MA 69 25015 Hampshire MA 69 50003 Bennington VT 70 06015 Del Norte CA 70 41011 Coos OR 70 41015 Curry OR 70 41019 Douglas OR 70 41029 Jackson OR 70 41033 Josephine OR 70 41039 Lane OR 71 47001 Anderson TN 71 47009 Blount TN 71 47013 Campbell TN 71 47093 Knox TN 71 47105 Loudon TN 71 47129 Morgan TN 71 47145 Roane TN 71 47151 Scott TN 71 47173 Union TN 72 12005 Bay FL 72 12013 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Clay GA 159 13071 Colquitt GA 159 13075 Cook GA 159 13101 Echols GA 159 13155 Irwin GA 159 13173 Lanier GA 159 13185 Lowndes GA 159 13205 Mitchell GA 159 13243 Randolph GA 159 13273 Terrell GA 159 13277 Tift GA 159 13287 Turner GA 159 13321 Worth GA 160 48015 Austin TX 160 48051 Burleson TX 160 48057 Calhoun TX 160 48089 Colorado TX 160 48123 DeWitt TX 160 48149 Fayette TX 160 48175 Goliad TX 160 48239 Jackson TX 160 48285 Lavaca TX 160 48321 Matagorda TX 160 48469 Victoria TX 160 48477 Washington TX 160 48481 Wharton TX 161 17003 Alexander IL 161 17055 Franklin IL 161 17059 Gallatin IL 161 17065 Hamilton IL 161 17069 Hardin IL 161 17077 Jackson IL 161 17081 Jefferson IL 161 17087 Johnson IL 161 17145 Perry IL 161 17151 Pope IL 161 17153 Pulaski IL 161 17157 Randolph IL 161 17165 Saline IL 161 17181 Union IL 161 17189 Washington IL 161 17199 Williamson IL 162 18025 Crawford IN 162 18061 Harrison IN 162 18175 Washington IN 162 21027 Breckinridge KY 162 21085 Grayson KY 162 21093 Hardin KY 162 21123 Larue KY 162 21155 Marion KY 162 21163 Meade KY 162 21179 Nelson KY 162 21215 Spencer KY 162 21229 Washington KY 163 19163 Scott IA 163 17073 Henry IL 163 17161 Rock Island IL 164 01001 Autauga AL 164 01051 Elmore AL 164 01101 Montgomery AL 165 01017 Chambers AL 165 01019 Cherokee AL 165 01029 Cleburne AL 165 01111 Randolph AL 165 13015 Bartow GA 165 13055 Chattooga GA 165 13115 Floyd GA 165 13233 Polk GA 166 06049 Modoc CA 166 06089 Shasta CA 166 06093 Siskiyou CA 166 06103 Tehama CA 166 41035 Klamath OR 167 51005 Alleghany VA 167 51015 Augusta VA 167 51017 Bath VA 167 51530 Buena Vista City VA 167 51580 Covington City VA 167 51660 Harrisonburg City VA 167 51091 Highland VA 167 51678 Lexington City VA 167 51163 Rockbridge VA 167 51165 Rockingham VA 167 51790 Staunton City VA 167 51820 Waynesboro City VA 167 54025 Greenbrier WV 167 54071 Pendleton WV 167 54075 Pocahontas WV 168 17143 Peoria IL 168 17179 Tazewell IL 168 17203 Woodford IL 169 37061 Duplin NC 169 37133 Onslow NC 169 37191 Wayne NC 170 01005 Barbour AL 170 01031 Coffee AL 170 01039 Covington AL 170 01045 Dale AL 170 01061 Geneva AL 170 01067 Henry AL 170 01069 Houston AL 170 12059 Holmes FL 170 12133 Washington FL 170 13239 Quitman GA 171 05033 Crawford AR 171 05047 Franklin AR 171 05083 Logan AR 171 05127 Scott AR 171 05131 Sebastian AR 171 40061 Haskell OK 171 40077 Latimer OK 171 40079 Le Flore OK 171 40135 Sequoyah OK 172 27017 Carlton MN 172 27031 Cook MN 172 27061 Itasca MN 172 27071 Koochiching MN 172 27075 Lake MN 172 27137 St. Louis MN 172 55031 Douglas WI 173 51019 Bedford VA 173 51515 Bedford City VA 173 51035 Carroll VA 173 51063 Floyd VA 173 51067 Franklin VA 173 51071 Giles VA 173 51121 Montgomery VA 173 51155 Pulaski VA 173 51750 Radford City VA 173 54063 Monroe WV 174 29043 Christian MO 174 29077 Greene MO 175 28009 Benton MS 175 28033 DeSoto MS 175 28071 Lafayette MS 175 28093 Marshall MS 175 28107 Panola MS 175 28119 Quitman MS 175 28137 Tate MS 175 28143 Tunica MS 175 28161 Yalobusha MS 176 19015 Boone IA 176 19025 Calhoun IA 176 19027 Carroll IA 176 19047 Crawford IA 176 19073 Greene IA 176 19075 Grundy IA 176 19079 Hamilton IA 176 19083 Hardin IA 176 19091 Humboldt IA 176 19127 Marshall IA 176 19161 Sac IA 176 19169 Story IA 176 19171 Tama IA 176 19187 Webster IA 176 19197 Wright IA 177 13029 Bryan GA 177 13051 Chatham GA 177 13103 Effingham GA 178 20003 Anderson KS 178 20011 Bourbon KS 178 20059 Franklin KS 178 20107 Linn KS 178 20121 Miami KS 178 29013 Bates MO 178 29015 Benton MO 178 29039 Cedar MO 178 29083 Henry MO 178 29101 Johnson MO 178 29107 Lafayette MO 178 29159 Pettis MO 178 29195 Saline MO 178 29185 St. Clair MO 178 29217 Vernon MO 179 19007 Appanoose IA 179 19051 Davis IA 179 19057 Des Moines IA 179 19087 Henry IA 179 19099 Jasper IA 179 19101 Jefferson IA 179 19107 Keokuk IA 179 19111 Lee IA 179 19123 Mahaska IA 179 19125 Marion IA 179 19135 Monroe IA 179 19157 Poweshiek IA 179 19177 Van Buren IA 179 19179 Wapello IA 179 17067 Hancock IL 179 17071 Henderson IL 179 29045 Clark MO 179 29199 Scotland MO 180 04005 Coconino AZ 180 04025 Yavapai AZ 181 05081 Little River AR 181 05091 Miller AR 181 05113 Polk AR 181 05133 Sevier AR 181 40013 Bryan OK 181 40023 Choctaw OK 181 40089 McCurtain OK 181 40127 Pushmataha OK 181 48037 Bowie TX 181 48067 Cass TX 181 48315 Marion TX 181 48343 Morris TX 182 19103 Johnson IA 182 19113 Linn IA 183 29019 Boone MO 183 29027 Callaway MO 183 29051 Cole MO 183 29053 Cooper MO 183 29089 Howard MO 183 29135 Moniteau MO 183 29151 Osage MO 184 22021 Caldwell Parish LA 184 22035 East Carroll Parish LA 184 22041 Franklin Parish LA 184 22049 Jackson Parish LA 184 22061 Lincoln Parish LA 184 22067 Morehouse Parish LA 184 22073 Ouachita Parish LA 184 22083 Richland Parish LA 184 22111 Union Parish LA 184 22123 West Carroll Parish LA 185 26013 Baraga MI 185 26043 Dickinson MI 185 26053 Gogebic MI 185 26061 Houghton MI 185 26071 Iron MI 185 26083 Keweenaw MI 185 26103 Marquette MI 185 26109 Menominee MI 185 26131 Ontonagon MI 185 55037 Florence WI 185 55051 Iron WI 185 55075 Marinette WI 185 55078 Menominee WI 185 55083 Oconto WI 185 55115 Shawano WI 186 45023 Chester SC 186 45057 Lancaster SC 186 45091 York SC 187 16005 Bannock ID 187 16011 Bingham ID 187 16019 Bonneville ID 187 16033 Clark ID 187 16043 Fremont ID 187 16051 Jefferson ID 187 16065 Madison ID 187 16077 Power ID 187 16081 Teton ID 188 36003 Allegany NY 188 36009 Cattaraugus NY 188 36013 Chautauqua NY 188 42083 McKean PA 188 42105 Potter PA 189 22003 Allen Parish LA 189 22009 Avoyelles Parish LA 189 22011 Beauregard Parish LA 189 22043 Grant Parish LA 189 22059 La Salle Parish LA 189 22079 Rapides Parish LA 189 22115 Vernon Parish LA 190 30019 Daniels MT 190 30021 Dawson MT 190 30031 Gallatin MT 190 30033 Garfield MT 190 30037 Golden Valley MT 190 30057 Madison MT 190 30055 McCone MT 190 30065 Musselshell MT 190 30067 Park MT 190 30069 Petroleum MT 190 30083 Richland MT 190 30085 Roosevelt MT 190 30091 Sheridan MT 190 30095 Stillwater MT 190 30097 Sweet Grass MT 190 30105 Valley MT 190 30111 Yellowstone MT 191 51007 Amelia VA 191 51025 Brunswick VA 191 51029 Buckingham VA 191 51037 Charlotte VA 191 51570 Colonial Heights City VA 191 51049 Cumberland VA 191 51053 Dinwiddie VA 191 51595 Emporia City VA 191 51081 Greensville VA 191 51670 Hopewell City VA 191 51111 Lunenburg VA 191 51117 Mecklenburg VA 191 51135 Nottoway VA 191 51730 Petersburg City VA 191 51147 Prince Edward VA 191 51149 Prince George VA 191 51183 Sussex VA 192 37051 Cumberland NC 193 20005 Atchison KS 193 20043 Doniphan KS 193 20045 Douglas KS 193 20103 Leavenworth KS 193 29003 Andrew MO 193 29021 Buchanan MO 194 42023 Cameron PA 194 42027 Centre PA 194 42033 Clearfield PA 194 42047 Elk PA 194 42065 Jefferson PA 195 16009 Benewah ID 195 16017 Bonner ID 195 16021 Boundary ID 195 16035 Clearwater ID 195 16049 Idaho ID 195 16055 Kootenai ID 195 16057 Latah ID 195 16061 Lewis ID 195 16069 Nez Perce ID 195 16079 Shoshone ID 196 29017 Bollinger MO 196 29023 Butler MO 196 29031 Cape Girardeau MO 196 29035 Carter MO 196 29093 Iron MO 196 29123 Madison MO 196 29133 Mississippi MO 196 29143 New Madrid MO 196 29157 Perry MO 196 29179 Reynolds MO 196 29181 Ripley MO 196 29201 Scott MO 196 29207 Stoddard MO 196 29223 Wayne MO 197 39013 Belmont OH 197 39081 Jefferson OH 197 39111 Monroe OH 197 54009 Brooke WV 197 54029 Hancock WV 197 54051 Marshall WV 197 54069 Ohio WV 197 54095 Tyler WV 197 54103 Wetzel WV 198 05021 Clay AR 198 05031 Craighead AR 198 05055 Greene AR 198 05075 Lawrence AR 198 05093 Mississippi AR 198 05111 Poinsett AR 198 05121 Randolph AR 198 29069 Dunklin MO 198 29155 Pemiscot MO 199 13111 Fannin GA 199 13123 Gilmer GA 199 13129 Gordon GA 199 13213 Murray GA 199 13227 Pickens GA 199 13281 Towns GA 199 13291 Union GA 199 13313 Whitfield GA 200 37033 Caswell NC 200 37157 Rockingham NC 200 51590 Danville City VA 200 51089 Henry VA 200 51690 Martinsville City VA 200 51141 Patrick VA 200 51143 Pittsylvania VA 201 48019 Bandera TX 201 48127 Dimmit TX 201 48163 Frio TX 201 48171 Gillespie TX 201 48259 Kendall TX 201 48265 Kerr TX 201 48283 La Salle TX 201 48323 Maverick TX 201 48325 Medina TX 201 48385 Real TX 201 48463 Uvalde TX 201 48507 Zavala TX 202 01113 Russell AL 202 13053 Chattahoochee GA 202 13145 Harris GA 202 13197 Marion GA 202 13215 Muscogee GA 202 13259 Stewart GA 202 13307 Webster GA 203 26009 Antrim MI 203 26019 Benzie MI 203 26055 Grand Traverse MI 203 26079 Kalkaska MI 203 26085 Lake MI 203 26089 Leelanau MI 203 26101 Manistee MI 203 26105 Mason MI 203 26113 Missaukee MI 203 26133 Osceola MI 203 26165 Wexford MI 204 21055 Crittenden KY 204 21059 Daviess KY 204 21091 Hancock KY 204 21101 Henderson KY 204 21107 Hopkins KY 204 21149 McLean KY 204 21177 Muhlenberg KY 204 21183 Ohio KY 204 21225 Union KY 204 21233 Webster KY 205 06023 Humboldt CA 205 06033 Lake CA 205 06045 Mendocino CA 205 06105 Trinity CA 206 53001 Adams WA 206 53007 Chelan WA 206 53017 Douglas WA 206 53025 Grant WA 206 53037 Kittitas WA 206 53047 Okanogan WA 207 13003 Atkinson GA 207 13005 Bacon GA 207 13025 Brantley GA 207 13039 Camden GA 207 13049 Charlton GA 207 13065 Clinch GA 207 13069 Coffee GA 207 13127 Glynn GA 207 13191 McIntosh GA 207 13229 Pierce GA 207 13299 Ware GA 208 37097 Iredell NC 208 37159 Rowan NC 209 55009 Brown WI 209 55029 Door WI 209 55061 Kewaunee WI 210 36007 Broome NY 210 36107 Tioga NY 210 42115 Susquehanna PA 211 40005 Atoka OK 211 40019 Carter OK 211 40029 Coal OK 211 40033 Cotton OK 211 40049 Garvin OK 211 40063 Hughes OK 211 40067 Jefferson OK 211 40069 Johnston OK 211 40085 Love OK 211 40095 Marshall OK 211 40099 Murray OK 211 40107 Okfuskee OK 211 40123 Pontotoc OK 211 40133 Seminole OK 211 40137 Stephens OK 212 02020 Anchorage Borough AK 213 41013 Crook OR 213 41017 Deschutes OR 213 41027 Hood River OR 213 41031 Jefferson OR 213 41037 Lake OR 213 41055 Sherman OR 213 41065 Wasco OR 213 53039 Klickitat WA 213 53059 Skamania WA 214 31109 Lancaster NE 215 37003 Alexander NC 215 37023 Burke NC 215 37035 Catawba NC 216 20021 Cherokee KS 216 20037 Crawford KS 216 29011 Barton MO 216 29097 Jasper MO 216 29145 Newton MO 216 40115 Ottawa OK 217 48303 Lubbock TX 218 55073 Marathon WI 218 55097 Portage WI 218 55141 Wood WI 219 19019 Buchanan IA 219 19021 Buena Vista IA 219 19023 Butler IA 219 19033 Cerro Gordo IA 219 19037 Chickasaw IA 219 19041 Clay IA 219 19059 Dickinson IA 219 19063 Emmet IA 219 19065 Fayette IA 219 19067 Floyd IA 219 19069 Franklin IA 219 19081 Hancock IA 219 19109 Kossuth IA 219 19131 Mitchell IA 219 19147 Palo Alto IA 219 19151 Pocahontas IA 219 19189 Winnebago IA 219 19195 Worth IA 220 48135 Ector TX 220 48329 Midland TX 221 48247 Jim Hogg TX 221 48479 Webb TX 221 48505 Zapata TX 222 47029 Cocke TN 222 47057 Grainger TN 222 47063 Hamblen TN 222 47067 Hancock TN 222 47089 Jefferson TN 222 47155 Sevier TN 223 19061 Dubuque IA 223 19097 Jackson IA 223 17085 Jo Daviess IL 223 55043 Grant WI 223 55045 Green WI 223 55049 Iowa WI 223 55065 Lafayette WI 224 17015 Carroll IL 224 17037 DeKalb IL 224 17103 Lee IL 224 17141 Ogle IL 224 17177 Stephenson IL 225 27055 Houston MN 225 55053 Jackson WI 225 55063 La Crosse WI 225 55081 Monroe WI 225 55121 Trempealeau WI 225 55123 Vernon WI 226 39003 Allen OH 226 39011 Auglaize OH 226 39107 Mercer OH 226 39137 Putnam OH 226 39161 Van Wert OH 227 36045 Jefferson NY 227 36049 Lewis NY 227 36089 St. Lawrence NY 228 51023 Botetourt VA 228 51045 Craig VA 228 51161 Roanoke VA 228 51770 Roanoke City VA 228 51775 Salem City VA 229 32009 Esmeralda NV 229 32017 Lincoln NV 229 32021 Mineral NV 229 32023 Nye NV 229 49001 Beaver UT 229 49017 Garfield UT 229 49021 Iron UT 229 49031 Piute UT 229 49053 Washington UT 230 37017 Bladen NC 230 37093 Hoke NC 230 37155 Robeson NC 230 37165 Scotland NC 231 31003 Antelope NE 231 31011 Boone NE 231 31021 Burt NE 231 31023 Butler NE 231 31025 Cass NE 231 31037 Colfax NE 231 31039 Cuming NE 231 31053 Dodge NE 231 31119 Madison NE 231 31125 Nance NE 231 31139 Pierce NE 231 31141 Platte NE 231 31143 Polk NE 231 31155 Saunders NE 231 31167 Stanton NE 231 31177 Washington NE 231 31179 Wayne NE 232 20013 Brown KS 232 20031 Coffey KS 232 20085 Jackson KS 232 20087 Jefferson KS 232 20139 Osage KS 232 20177 Shawnee KS 233 37045 Cleveland NC 233 37109 Lincoln NC 233 37161 Rutherford NC 234 37057 Davidson NC 234 37059 Davie NC 234 37197 Yadkin NC 235 48375 Potter TX 235 48381 Randall TX 236 31001 Adams NE 236 31015 Boyd NE 236 31017 Brown NE 236 31019 Buffalo NE 236 31035 Clay NE 236 31041 Custer NE 236 31047 Dawson NE 236 31071 Garfield NE 236 31077 Greeley NE 236 31079 Hall NE 236 31081 Hamilton NE 236 31089 Holt NE 236 31093 Howard NE 236 31103 Keya Paha NE 236 31115 Loup NE 236 31121 Merrick NE 236 31129 Nuckolls NE 236 31149 Rock NE 236 31163 Sherman NE 236 31175 Valley NE 236 31181 Webster NE 236 31183 Wheeler NE 237 13031 Bulloch GA 237 13043 Candler GA 237 13109 Evans GA 237 13179 Liberty GA 237 13183 Long GA 237 13251 Screven GA 237 13267 Tattnall GA 237 13305 Wayne GA 238 45031 Darlington SC 238 45041 Florence SC 238 45089 Williamsburg SC 239 37025 Cabarrus NC 239 37167 Stanly NC 240 51003 Albemarle VA 240 51540 Charlottesville City VA 240 51065 Fluvanna VA 240 51079 Greene VA 240 51109 Louisa VA 240 51125 Nelson VA 241 13001 Appling GA 241 13107 Emanuel GA 241 13141 Hancock GA 241 13161 Jeff Davis GA 241 13167 Johnson GA 241 13175 Laurens GA 241 13209 Montgomery GA 241 13237 Putnam GA 241 13271 Telfair GA 241 13279 Toombs GA 241 13283 Treutlen GA 241 13303 Washington GA 241 13309 Wheeler GA 242 22019 Calcasieu Parish LA 242 22023 Cameron Parish LA 242 22053 Jefferson Davis Parish LA 243 17127 Massac IL 243 21007 Ballard KY 243 21033 Caldwell KY 243 21035 Calloway KY 243 21039 Carlisle KY 243 21083 Graves KY 243 21139 Livingston KY 243 21143 Lyon KY 243 21157 Marshall KY 243 21145 McCracken KY 244 20017 Chase KS 244 20027 Clay KS 244 20041 Dickinson KS 244 20061 Geary KS 244 20111 Lyon KS 244 20117 Marshall KS 244 20127 Morris KS 244 20131 Nemaha KS 244 20149 Pottawatomie KS 244 20161 Riley KS 244 20197 Wabaunsee KS 244 20201 Washington KS 245 29009 Barry MO 245 29057 Dade MO 245 29067 Douglas MO 245 29091 Howell MO 245 29109 Lawrence MO 245 29153 Ozark MO 245 29209 Stone MO 245 29213 Taney MO 246 01027 Clay AL 246 01037 Coosa AL 246 01081 Lee AL 246 01087 Macon AL 246 01123 Tallapoosa AL 247 16027 Canyon ID 247 16039 Elmore ID 247 16073 Owyhee ID 248 45027 Clarendon SC 248 45055 Kershaw SC 248 45061 Lee SC 248 45085 Sumter SC 249 48041 Brazos TX 249 48185 Grimes TX 250 35013 Dona Ana NM 250 35051 Sierra NM 251 20007 Barber KS 251 20009 Barton KS 251 20033 Comanche KS 251 20047 Edwards KS 251 20051 Ellis KS 251 20053 Ellsworth KS 251 20097 Kiowa KS 251 20115 Marion KS 251 20113 McPherson KS 251 20135 Ness KS 251 20145 Pawnee KS 251 20151 Pratt KS 251 20159 Rice KS 251 20165 Rush KS 251 20167 Russell KS 251 20169 Saline KS 251 20185 Stafford KS 251 20195 Trego KS 252 19035 Cherokee IA 252 19093 Ida IA 252 19133 Monona IA 252 19141 O'Brien IA 252 19149 Plymouth IA 252 19167 Sioux IA 252 19193 Woodbury IA 252 46127 Union SD 253 55001 Adams WI 253 55021 Columbia WI 253 55023 Crawford WI 253 55057 Juneau WI 253 55077 Marquette WI 253 55103 Richland WI 253 55111 Sauk WI 254 55003 Ashland WI 254 55007 Bayfield WI 254 55019 Clark WI 254 55041 Forest WI 254 55067 Langlade WI 254 55069 Lincoln WI 254 55085 Oneida WI 254 55099 Price WI 254 55119 Taylor WI 254 55125 Vilas WI 255 28011 Bolivar MS 255 28015 Carroll MS 255 28027 Coahoma MS 255 28053 Humphreys MS 255 28055 Issaquena MS 255 28083 Leflore MS 255 28125 Sharkey MS 255 28133 Sunflower MS 255 28135 Tallahatchie MS 255 28151 Washington MS 256 51009 Amherst VA 256 51011 Appomattox VA 256 51031 Campbell VA 256 51083 Halifax VA 256 51680 Lynchburg City VA 257 56001 Albany WY 257 56005 Campbell WY 257 56009 Converse WY 257 56011 Crook WY 257 56021 Laramie WY 257 56027 Niobrara WY 257 56031 Platte WY 257 56045 Weston WY 258 01009 Blount AL 258 01043 Cullman AL 258 01057 Fayette AL 258 01093 Marion AL 258 01133 Winston AL 259 35005 Chaves NM 259 35015 Eddy NM 259 35025 Lea NM 259 48165 Gaines TX 259 48501 Yoakum TX 260 26007 Alpena MI 260 26029 Charlevoix MI 260 26031 Cheboygan MI 260 26039 Crawford MI 260 26047 Emmet MI 260 26119 Montmorency MI 260 26135 Oscoda MI 260 26137 Otsego MI 260 26141 Presque Isle MI 260 26143 Roscommon MI 261 27027 Clay MN 261 38017 Cass ND 262 45013 Beaufort SC 262 45049 Hampton SC 262 45053 Jasper SC 263 35019 Guadalupe NM 263 35028 Los Alamos NM 263 35033 Mora NM 263 35047 San Miguel NM 263 35049 Santa Fe NM 264 02013 Aleutians East Borough AK 264 02016 Aleutians West Census Area AK 264 02050 Bethel Census Area AK 264 02060 Bristol Bay Borough AK 264 02070 Dillingham Census Area AK 264 02122 Kenai Peninsula Borough AK 264 02150 Kodiak Island Borough AK 264 02164 Lake and Peninsula Borough AK 264 02170 Matanuska-Susitna Borough AK 264 02261 Valdez-Cordova Census Area AK 265 19089 Howard IA 265 19191 Winneshiek IA 265 27039 Dodge MN 265 27045 Fillmore MN 265 27099 Mower MN 265 27157 Wabasha MN 265 27169 Winona MN 265 55011 Buffalo WI 266 37009 Ashe NC 266 37011 Avery NC 266 37027 Caldwell NC 266 37189 Watauga NC 266 47091 Johnson TN 267 55071 Manitowoc WI 267 55117 Sheboygan WI 268 19031 Cedar IA 268 19045 Clinton IA 268 19115 Louisa IA 268 19139 Muscatine IA 268 17131 Mercer IL 268 17195 Whiteside IL 269 55101 Racine WI 270 17011 Bureau IL 270 17099 La Salle IL 270 17105 Livingston IL 270 17155 Putnam IL 271 36015 Chemung NY 271 42015 Bradford PA 271 42117 Tioga PA 272 48035 Bosque TX 272 48049 Brown TX 272 48083 Coleman TX 272 48093 Comanche TX 272 48133 Eastland TX 272 48143 Erath TX 272 48193 Hamilton TX 272 48217 Hill TX 272 48333 Mills TX 272 48425 Somervell TX 273 17039 De Witt IL 273 17113 McLean IL 274 16013 Blaine ID 274 16025 Camas ID 274 16031 Cassia ID 274 16047 Gooding ID 274 16053 Jerome ID 274 16063 Lincoln ID 274 16067 Minidoka ID 274 16083 Twin Falls ID 275 48001 Anderson TX 275 48213 Henderson TX 275 48349 Navarro TX 276 30011 Carter MT 276 38001 Adams ND 276 46019 Butte SD 276 46033 Custer SD 276 46047 Fall River SD 276 46063 Harding SD 276 46081 Lawrence SD 276 46093 Meade SD 276 46103 Pennington SD 276 46105 Perkins SD 277 20035 Cowley KS 277 20049 Elk KS 277 20073 Greenwood KS 277 20077 Harper KS 277 20079 Harvey KS 277 20095 Kingman KS 277 20155 Reno KS 277 20191 Sumner KS 278 20001 Allen KS 278 20019 Chautauqua KS 278 20099 Labette KS 278 20125 Montgomery KS 278 20133 Neosho KS 278 20205 Wilson KS 278 20207 Woodson KS 278 40035 Craig OK 278 40105 Nowata OK 278 40147 Washington OK 279 16041 Franklin ID 279 16071 Oneida ID 279 49003 Box Elder UT 279 49005 Cache UT 280 20025 Clark KS 280 20055 Finney KS 280 20057 Ford KS 280 20067 Grant KS 280 20069 Gray KS 280 20071 Greeley KS 280 20075 Hamilton KS 280 20081 Haskell KS 280 20083 Hodgeman KS 280 20093 Kearny KS 280 20101 Lane KS 280 20119 Meade KS 280 20129 Morton KS 280 20171 Scott KS 280 20175 Seward KS 280 20187 Stanton KS 280 20189 Stevens KS 280 20203 Wichita KS 280 40007 Beaver OK 280 40025 Cimarron OK 280 40139 Texas OK 281 40091 McIntosh OK 281 40101 Muskogee OK 281 40111 Okmulgee OK 281 40121 Pittsburg OK 282 17057 Fulton IL 282 17095 Knox IL 282 17123 Marshall IL 282 17125 Mason IL 282 17109 McDonough IL 282 17175 Stark IL 282 17187 Warren IL 283 36019 Clinton NY 283 36031 Essex NY 283 36033 Franklin NY 284 45001 Abbeville SC 284 45047 Greenwood SC 284 45059 Laurens SC 284 45065 McCormick SC 285 04001 Apache AZ 285 35006 Cibola NM 285 35031 McKinley NM 286 46099 Minnehaha SD 287 55059 Kenosha WI 288 48059 Callahan TX 288 48253 Jones TX 288 48441 Taylor TX 289 49007 Carbon UT 289 49013 Duchesne UT 289 49015 Emery UT 289 49019 Grand UT 289 49029 Morgan UT 289 49043 Summit UT 289 49047 Uintah UT 289 49051 Wasatch UT 289 49055 Wayne UT 290 27011 Big Stone MN 290 27117 Pipestone MN 290 27133 Rock MN 290 27155 Traverse MN 290 46005 Beadle SD 290 46011 Brookings SD 290 46025 Clark SD 290 46029 Codington SD 290 46039 Deuel SD 290 46051 Grant SD 290 46057 Hamlin SD 290 46077 Kingsbury SD 290 46079 Lake SD 290 46097 Miner SD 290 46101 Moody SD 290 46109 Roberts SD 290 46111 Sanborn SD 291 37123 Montgomery NC 291 37125 Moore NC 291 37153 Richmond NC 292 08101 Pueblo CO 293 21221 Trigg KY 293 47081 Hickman TN 293 47083 Houston TN 293 47085 Humphreys TN 293 47099 Lawrence TN 293 47101 Lewis TN 293 47135 Perry TN 293 47161 Stewart TN 293 47181 Wayne TN 294 19013 Black Hawk IA 294 19017 Bremer IA 295 40071 Kay OK 295 40103 Noble OK 295 40117 Pawnee OK 295 40119 Payne OK 296 42107 Schuylkill PA 297 41001 Baker OR 297 41021 Gilliam OR 297 41023 Grant OR 297 41049 Morrow OR 297 41059 Umatilla OR 297 41061 Union OR 297 41063 Wallowa OR 297 41069 Wheeler OR 298 02068 Denali Borough AK 298 02090 Fairbanks North Star Borough AK 298 02180 Nome Census Area AK 298 02185 North Slope Borough AK 298 02188 Northwest Arctic Borough AK 298 02240 Southeast Fairbanks Census Area AK 298 02270 Wade Hampton Census Area AK 298 02290 Yukon-Koyukuk Census Area AK 299 29001 Adair MO 299 29025 Caldwell MO 299 29033 Carroll MO 299 29049 Clinton MO 299 29061 Daviess MO 299 29063 DeKalb MO 299 29079 Grundy MO 299 29081 Harrison MO 299 29103 Knox MO 299 29117 Livingston MO 299 29129 Mercer MO 299 29171 Putnam MO 299 29197 Schuyler MO 299 29211 Sullivan MO 300 01011 Bullock AL 300 01013 Butler AL 300 01041 Crenshaw AL 300 01047 Dallas AL 300 01085 Lowndes AL 300 01105 Perry AL 300 01109 Pike AL 301 27109 Olmsted MN 302 40003 Alfalfa OK 302 40011 Blaine OK 302 40015 Caddo OK 302 40047 Garfield OK 302 40053 Grant OK 302 40073 Kingfisher OK 302 40093 Major OK 302 40151 Woods OK 303 30005 Blaine MT 303 30013 Cascade MT 303 30015 Chouteau MT 303 30035 Glacier MT 303 30041 Hill MT 303 30051 Liberty MT 303 30073 Pondera MT 303 30099 Teton MT 303 30101 Toole MT 304 37171 Surry NC 304 37193 Wilkes NC 305 40009 Beckham OK 305 40039 Custer OK 305 40043 Dewey OK 305 40045 Ellis OK 305 40055 Greer OK 305 40057 Harmon OK 305 40059 Harper OK 305 40065 Jackson OK 305 40075 Kiowa OK 305 40129 Roger Mills OK 305 40149 Washita OK 305 40153 Woodward OK 306 48077 Clay TX 306 48485 Wichita TX 307 19119 Lyon IA 307 31027 Cedar NE 307 31107 Knox NE 307 46009 Bon Homme SD 307 46027 Clay SD 307 46061 Hanson SD 307 46067 Hutchinson SD 307 46083 Lincoln SD 307 46087 McCook SD 307 46125 Turner SD 307 46135 Yankton SD 308 13079 Crawford GA 308 13081 Crisp GA 308 13093 Dooly GA 308 13193 Macon GA 308 13207 Monroe GA 308 13249 Schley GA 308 13261 Sumter GA 308 13269 Taylor GA 309 37015 Bertie NC 309 37029 Camden NC 309 37041 Chowan NC 309 37073 Gates NC 309 37091 Hertford NC 309 37139 Pasquotank NC 309 37143 Perquimans NC 310 29055 Crawford MO 310 29187 St. Francois MO 310 29186 Ste. Genevieve MO 310 29221 Washington MO 311 08003 Alamosa CO 311 08009 Baca CO 311 08011 Bent CO 311 08017 Cheyenne CO 311 08021 Conejos CO 311 08023 Costilla CO 311 08025 Crowley CO 311 08055 Huerfano CO 311 08061 Kiowa CO 311 08071 Las Animas CO 311 08079 Mineral CO 311 08089 Otero CO 311 08099 Prowers CO 311 08105 Rio Grande CO 311 08109 Saguache CO 311 35007 Colfax NM 312 35045 San Juan NM 313 48021 Bastrop TX 313 48055 Caldwell TX 313 48287 Lee TX 314 48073 Cherokee TX 314 48365 Panola TX 314 48401 Rusk TX 315 30003 Big Horn MT 315 30009 Carbon MT 315 30017 Custer MT 315 30025 Fallon MT 315 30075 Powder River MT 315 30079 Prairie MT 315 30087 Rosebud MT 315 30103 Treasure MT 315 56003 Big Horn WY 315 56019 Johnson WY 315 56029 Park WY 315 56033 Sheridan WY 316 16007 Bear Lake ID 316 16029 Caribou ID 316 49009 Daggett UT 316 49033 Rich UT 316 56007 Carbon WY 316 56023 Lincoln WY 316 56035 Sublette WY 316 56037 Sweetwater WY 316 56041 Uinta WY 317 31059 Fillmore NE 317 31067 Gage NE 317 31095 Jefferson NE 317 31097 Johnson NE 317 31127 Nemaha NE 317 31131 Otoe NE 317 31133 Pawnee NE 317 31147 Richardson NE 317 31151 Saline NE 317 31159 Seward NE 317 31169 Thayer NE 317 31185 York NE 318 27069 Kittson MN 318 27077 Lake of the Woods MN 318 27089 Marshall MN 318 27113 Pennington MN 318 27125 Red Lake MN 318 27135 Roseau MN 318 38005 Benson ND 318 38019 Cavalier ND 318 38027 Eddy ND 318 38063 Nelson ND 318 38067 Pembina ND 318 38071 Ramsey ND 318 38079 Rolette ND 318 38091 Steele ND 318 38095 Towner ND 318 38097 Traill ND 318 38099 Walsh ND 319 13095 Dougherty GA 319 13177 Lee GA 320 48235 Irion TX 320 48413 Schleicher TX 320 48435 Sutton TX 320 48451 Tom Green TX 321 18029 Dearborn IN 321 18047 Franklin IN 321 18115 Ohio IN 321 18137 Ripley IN 321 18155 Switzerland IN 322 38009 Bottineau ND 322 38013 Burke ND 322 38023 Divide ND 322 38049 McHenry ND 322 38053 McKenzie ND 322 38061 Mountrail ND 322 38075 Renville ND 322 38101 Ward ND 322 38105 Williams ND 323 35003 Catron NM 323 35053 Socorro NM 323 35057 Torrance NM 323 35061 Valencia NM 324 42103 Pike PA 324 42127 Wayne PA 325 38015 Burleigh ND 325 38059 Morton ND 326 27005 Becker MN 326 27087 Mahnomen MN 326 27107 Norman MN 326 27111 Otter Tail MN 326 27167 Wilkin MN 327 45017 Calhoun SC 327 45075 Orangeburg SC 328 04017 Navajo AZ 329 48047 Brooks TX 329 48131 Duval TX 329 48249 Jim Wells TX 329 48261 Kenedy TX 329 48273 Kleberg TX 329 48297 Live Oak TX 329 48311 McMullen TX 330 17033 Crawford IL 330 17047 Edwards IL 330 17101 Lawrence IL 330 17159 Richland IL 330 17185 Wabash IL 330 17191 Wayne IL 330 17193 White IL 331 48079 Cochran TX 331 48189 Hale TX 331 48219 Hockley TX 331 48279 Lamb TX 331 48305 Lynn TX 331 48437 Swisher TX 331 48445 Terry TX 332 37007 Anson NC 332 45025 Chesterfield SC 332 45069 Marlboro SC 333 39037 Darke OH 333 39149 Shelby OH 334 48011 Armstrong TX 334 48065 Carson TX 334 48075 Childress TX 334 48087 Collingsworth TX 334 48101 Cottle TX 334 48129 Donley TX 334 48179 Gray TX 334 48191 Hall TX 334 48195 Hansford TX 334 48211 Hemphill TX 334 48233 Hutchinson TX 334 48295 Lipscomb TX 334 48357 Ochiltree TX 334 48393 Roberts TX 334 48483 Wheeler TX 335 22031 De Soto Parish LA 335 22069 Natchitoches Parish LA 335 22081 Red River Parish LA 335 22085 Sabine Parish LA 336 27119 Polk MN 336 38035 Grand Forks ND 337 48097 Cooke TX 337 48237 Jack TX 337 48337 Montague TX 337 48363 Palo Pinto TX 338 08007 Archuleta CO 338 08033 Dolores CO 338 08067 La Plata CO 338 08083 Montezuma CO 338 08111 San Juan CO 339 31007 Banner NE 339 31013 Box Butte NE 339 31033 Cheyenne NE 339 31045 Dawes NE 339 31105 Kimball NE 339 31123 Morrill NE 339 31157 Scotts Bluff NE 339 31165 Sioux NE 339 56015 Goshen WY 340 35009 Curry NM 340 35011 DeBaca NM 340 35021 Harding NM 340 35037 Quay NM 340 35041 Roosevelt NM 340 35059 Union NM 341 35027 Lincoln NM 341 35035 Otero NM 342 46003 Aurora SD 342 46015 Brule SD 342 46017 Buffalo SD 342 46023 Charles Mix SD 342 46035 Davison SD 342 46043 Douglas SD 342 46053 Gregory SD 342 46059 Hand SD 342 46065 Hughes SD 342 46069 Hyde SD 342 46073 Jerauld SD 342 46085 Lyman SD 342 46117 Stanley SD 342 46119 Sully SD 342 46123 Tripp SD 343 48043 Brewster TX 343 48103 Crane TX 343 48105 Crockett TX 343 48243 Jeff Davis TX 343 48301 Loving TX 343 48371 Pecos TX 343 48377 Presidio TX 343 48383 Reagan TX 343 48389 Reeves TX 343 48443 Terrell TX 343 48461 Upton TX 343 48475 Ward TX 343 48495 Winkler TX 344 01007 Bibb AL 344 01021 Chilton AL 344 01065 Hale AL 345 45039 Fairfield SC 345 45071 Newberry SC 345 45081 Saluda SC 346 37039 Cherokee NC 346 37043 Clay NC 346 37075 Graham NC 346 37113 Macon NC 347 22037 East Feliciana Parish LA 347 22077 Pointe Coupee Parish LA 347 22091 St. Helena Parish LA 347 22125 West Feliciana Parish LA 347 28157 Wilkinson MS 348 46013 Brown SD 348 46021 Campbell SD 348 46037 Day SD 348 46041 Dewey SD 348 46045 Edmunds SD 348 46049 Faulk SD 348 46091 Marshall SD 348 46089 McPherson SD 348 46107 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359 08095 Phillips CO 359 08121 Washington CO 359 08125 Yuma CO 359 31057 Dundy NE 360 02100 Haines Borough AK 360 02105 Hoonah-Angoon Census Area AK 360 02110 Juneau Borough AK 360 02130 Ketchikan Gateway Borough AK 360 02195 Petersburg AK 360 02198 Prince of Wales-Hyder AK 360 02220 Sitka Borough AK 360 02230 Skagway Municipality AK 360 02275 Wrangell AK 360 02282 Yakutat Borough AK 361 49023 Juab UT 361 49027 Millard UT 361 49039 Sanpete UT 361 49041 Sevier UT 362 16003 Adams ID 362 16015 Boise ID 362 16045 Gem ID 362 16075 Payette ID 362 16085 Valley ID 362 16087 Washington ID 363 48003 Andrews TX 363 48033 Borden TX 363 48115 Dawson TX 363 48173 Glasscock TX 363 48227 Howard TX 363 48317 Martin TX 364 30001 Beaverhead MT 364 30007 Broadwater MT 364 30023 Deer Lodge MT 364 30043 Jefferson MT 364 30093 Silver Bow MT 365 40141 Tillman OK 365 48009 Archer TX 365 48023 Baylor TX 365 48155 Foard TX 365 48197 Hardeman TX 365 48429 Stephens TX 365 48447 Throckmorton TX 365 48487 Wilbarger TX 365 48503 Young TX 366 53003 Asotin WA 366 53023 Garfield WA 366 53075 Whitman WA 367 29007 Audrain MO 367 29137 Monroe MO 367 29175 Randolph MO 367 29205 Shelby MO 368 20029 Cloud KS 368 20039 Decatur KS 368 20065 Graham KS 368 20089 Jewell KS 368 20105 Lincoln KS 368 20123 Mitchell KS 368 20137 Norton KS 368 20141 Osborne KS 368 20143 Ottawa KS 368 20147 Phillips KS 368 20153 Rawlins KS 368 20157 Republic KS 368 20163 Rooks KS 368 20183 Smith KS 369 19003 Adams IA 369 19071 Fremont IA 369 19129 Mills IA 369 19137 Montgomery IA 369 19145 Page IA 369 19173 Taylor IA 369 29005 Atchison MO 370 19011 Benton IA 370 19095 Iowa IA 370 19183 Washington IA 371 37005 Alleghany NC 371 51640 Galax City VA 371 51077 Grayson VA 371 51197 Wythe VA 372 08039 Elbert CO 372 08063 Kit Carson CO 372 08073 Lincoln CO 372 20023 Cheyenne KS 372 20063 Gove KS 372 20109 Logan KS 372 20179 Sheridan KS 372 20181 Sherman KS 372 20193 Thomas KS 372 20199 Wallace KS 373 53013 Columbia WA 373 53071 Walla Walla WA 374 08115 Sedgwick CO 374 31005 Arthur NE 374 31009 Blaine NE 374 31029 Chase NE 374 31049 Deuel NE 374 31069 Garden NE 374 31091 Hooker NE 374 31101 Keith NE 374 31111 Lincoln NE 374 31113 Logan NE 374 31117 McPherson NE 374 31135 Perkins NE 374 31171 Thomas NE 375 35017 Grant NM 375 35023 Hidalgo NM 375 35029 Luna NM 376 48111 Dallam TX 376 48117 Deaf Smith TX 376 48205 Hartley TX 376 48341 Moore TX 376 48359 Oldham TX 376 48421 Sherman TX 377 01023 Choctaw AL 377 01063 Greene AL 377 01091 Marengo AL 377 01119 Sumter AL 378 13033 Burke GA 378 13125 Glascock GA 378 13163 Jefferson GA 378 13165 Jenkins GA 378 13301 Warren GA 379 26033 Chippewa MI 379 26095 Luce MI 379 26097 Mackinac MI 380 26003 Alger MI 380 26041 Delta MI 380 26153 Schoolcraft MI 381 48137 Edwards TX 381 48271 Kinney TX 381 48465 Val Verde TX 382 56013 Fremont WY 382 56017 Hot Springs WY 382 56043 Washakie WY 383 19039 Clarke IA 383 19053 Decatur IA 383 19117 Lucas IA 383 19159 Ringgold IA 383 19175 Union IA 383 19185 Wayne IA 384 19005 Allamakee IA 384 19043 Clayton IA 384 19055 Delaware IA 385 29111 Lewis MO 385 29127 Marion MO 385 29173 Ralls MO 386 45005 Allendale SC 386 45009 Bamberg SC 386 45011 Barnwell SC 387 38003 Barnes ND 387 38021 Dickey ND 387 38039 Griggs ND 387 38045 LaMoure ND 387 38073 Ransom ND 387 38077 Richland ND 387 38081 Sargent ND 388 19009 Audubon IA 388 19029 Cass IA 388 19085 Harrison IA 388 19165 Shelby IA 389 31061 Franklin NE 389 31063 Frontier NE 389 31065 Furnas NE 389 31073 Gosper NE 389 31083 Harlan NE 389 31085 Hayes NE 389 31087 Hitchcock NE 389 31099 Kearney NE 389 31137 Phelps NE 389 31145 Red Willow NE 390 48151 Fisher TX 390 48335 Mitchell TX 390 48353 Nolan TX 390 48415 Scurry TX 391 41025 Harney OR 391 41045 Malheur OR 392 29075 Gentry MO 392 29087 Holt MO 392 29147 Nodaway MO 392 29227 Worth MO 393 29041 Chariton MO 393 29115 Linn MO 393 29121 Macon MO 394 46007 Bennett SD 394 46055 Haakon SD 394 46071 Jackson SD 394 46075 Jones SD 394 46095 Mellette SD 394 46113 Shannon SD 394 46121 Todd SD 395 38031 Foster ND 395 38069 Pierce ND 395 38083 Sheridan ND 395 38093 Stutsman ND 395 38103 Wells ND 396 19001 Adair IA 396 19077 Guthrie IA 396 19121 Madison IA 397 01075 Lamar AL 397 01107 Pickens AL 398 31043 Dakota NE 398 31051 Dixon NE 398 31173 Thurston NE 399 48281 Lampasas TX 399 48411 San Saba TX 400 48017 Bailey TX 400 48069 Castro TX 400 48369 Parmer TX 401 48045 Briscoe TX 401 48107 Crosby TX 401 48125 Dickens TX 401 48153 Floyd TX 401 48169 Garza TX 401 48263 Kent TX 401 48345 Motley TX 402 48095 Concho TX 402 48267 Kimble TX 402 48319 Mason TX 402 48307 McCulloch TX 402 48327 Menard TX 403 30027 Fergus MT 403 30045 Judith Basin MT 403 30059 Meagher MT 403 30071 Phillips MT 403 30107 Wheatland MT 404 49025 Kane UT 404 49037 San Juan UT 405 56039 Teton WY 406 19105 Jones IA 407 16023 Butte ID 407 16037 Custer ID 407 16059 Lemhi ID 408 48081 Coke TX 408 48399 Runnels TX 408 48431 Sterling TX 409 48207 Haskell TX 409 48269 King TX 409 48275 Knox TX 409 48417 Shackelford TX 409 48433 Stonewall TX 410 31031 Cherry NE 410 31075 Grant NE 410 31161 Sheridan NE 411 48109 Culberson TX 411 48229 Hudspeth TX 412 72001 Adjuntas PR 412 72003 Aguada PR 412 72005 Aguadilla PR 412 72007 Aguas Buenas PR 412 72009 Aibonito PR 412 72011 Anasco PR 412 72013 Arecibo PR 412 72015 Arroyo PR 412 72017 Barceloneta PR 412 72019 Barranquitas PR 412 72021 Bayamon PR 412 72023 Cabo Rojo PR 412 72025 Caguas PR 412 72027 Camuy PR 412 72029 Canovanas PR 412 72031 Carolina PR 412 72033 Catano PR 412 72035 Cayey PR 412 72037 Ceiba PR 412 72039 Ciales PR 412 72041 Cidra PR 412 72043 Coamo PR 412 72045 Comerio PR 412 72047 Corozal PR 412 72049 Culebra PR 412 72051 Dorado PR 412 72053 Fajardo PR 412 72054 Florida PR 412 72055 Guanica PR 412 72057 Guayama PR 412 72059 Guayanilla PR 412 72061 Guaynabo PR 412 72063 Gurabo PR 412 72065 Hatillo PR 412 72067 Hormigueros PR 412 72069 Humacao PR 412 72071 Isabela PR 412 72073 Jayuya PR 412 72075 Juana Diaz PR 412 72077 Juncos PR 412 72079 Lajas PR 412 72081 Lares PR 412 72083 Las Marias PR 412 72085 Las Piedras PR 412 72087 Loiza PR 412 72089 Luquillo PR 412 72091 Manati PR 412 72093 Maricao PR 412 72095 Maunabo PR 412 72097 Mayaguez PR 412 72099 Moca PR 412 72101 Morovis PR 412 72103 Naguabo PR 412 72105 Naranjito PR 412 72107 Orocovis PR 412 72109 Patillas PR 412 72111 Penuelas PR 412 72113 Ponce PR 412 72115 Quebradillas PR 412 72117 Rincon PR 412 72119 Rio Grande PR 412 72121 Sabana Grande PR 412 72123 Salinas PR 412 72125 San German PR 412 72127 San Juan PR 412 72129 San Lorenzo PR 412 72131 San Sebastian PR 412 72133 Santa Isabel PR 412 72135 Toa Alta PR 412 72137 Toa Baja PR 412 72139 Trujillo Alto PR 412 72141 Utuado PR 412 72143 Vega Alta PR 412 72145 Vega Baja PR 412 72147 Vieques PR 412 72149 Villalba PR 412 72151 Yabucoa PR 412 72153 Yauco PR 413 66010 Guam GU. 413 69085 Northern Islands MP 413 69100 Rota MP 413 69110 Saipan MP 413 69120 Tinian MP 414 78010 St. Croix VI 414 78020 St. John VI 414 78030 St. Thomas VI 415 60010 Eastern District AS 415 60020 Manu'a District AS 415 60030 Rose Island AS 415 60040 Swains Island AS 415 60050 Western District AS 416 99023 Gulf of Mexico Central and East GM 416 99001 Gulf of Mexico West GM [85 FR 22865, Apr. 23, 2020] Subpart B—Applications and Licenses § 27.10 Regulatory status. The following rules apply concerning the regulatory status in the frequency bands specified in § 27.5. (a) Single authorization. (b) Designation of regulatory status in initial application. (c) Amendment of pending applications. (1) Any pending application may be amended to: (i) Change the carrier regulatory status requested, or (ii) Add to the pending request in order to obtain common carrier, non-common carrier, private internal communications, or broadcast services status, or a combination thereof, in a single license. (2) Amendments to change, or add to, the carrier regulatory status in a pending application are minor amendments filed under § 1.927 of this chapter. (d) Modification of license. (1) A licensee may modify a license to: (i) Change the regulatory status authorized, or (ii) Add to the status authorized in order to obtain a combination of services of different regulatory status in a single license. (2) Applications to change, or add to, the carrier status in a license are modifications not requiring prior Commission authorization. The licensee must notify the Commission within 30 days of the change. If the change results in the discontinuance, reduction, or impairment of an existing service, the licensee is subject to the provisions of § 27.66. [65 FR 3146, Jan. 20, 2000, as amended at 65 FR 17602, Apr. 4, 2000; 67 FR 5510, Feb. 6, 2002; 67 FR 41854, June 20, 2002; 68 FR 66286, Nov. 25, 2003; 72 FR 27709, May 16, 2007] § 27.11 Initial authorization. Link to an amendment published at 91 FR 48742, July 31, 2026. (a) An applicant must file a single application for an initial authorization for all markets won and frequency blocks desired. Initial authorizations shall be granted in accordance with § 27.5. Applications for individual sites are not required and will not be accepted, except where required for environmental assessments, in accordance with §§ 1.1301 through 1.1319 of this chapter. (b) 2305-2320 MHz and 2345-2360 MHz bands. (1) Authorizations for Blocks A and B will be based on Major Economic Areas (MEAs), as specified in § 27.6(a)(1). (2) Authorizations for Blocks C and D will be based on Regional Economic Area Groupings (REAGs), as specified in § 27.6(a)(2). (c) 746-758 MHz, 775-788 MHz, and 805-806 MHz bands. (1) Authorizations for Block A, consisting of two paired channels of 1 megahertz each, will be based on those geographic areas specified in § 27.6(b)(1). (2) Authorizations for Block B, consisting of two paired channels of 1 megahertz each, will be based on those geographic areas specified in § 27.6(b)(1). (3) Authorizations for Block C, consisting of two paired channels of 11 megahertz each, will be based on those geographic areas specified in § 27.6(b)(2). In the event that no licenses granting authorizations for Block C, consisting of two paired channels of 11 megahertz each, are assigned based on the results of the first auction in which such licenses are offered because the auction results do not satisfy the applicable reserve price, then the authorizations for the spectrum in the 746-757 MHz and 776-787 MHz bands will instead be as follows: (i) Authorizations for Block C1, consisting of two paired channels of 6 megahertz each in the 746-752 MHz and 776-782 MHz bands, will be based on those geographic areas specified in § 27.6(b)(2)(i). (ii) Authorizations for Block C2, consisting of two paired channels of 5 megahertz each in the 752-757 MHz and 782-787 MHz bands, will be based on those geographic areas specified in § 27.6(b)(2)(ii). (d) 698-746 MHz band. (1) Authorizations for Block A, consisting of two paired channels of 6 megahertz each, will be based on those geographic areas specified in § 27.6(c)(1). (2) Authorizations for Block B, consisting of two paired channels of 6 megahertz each, will be based on those geographic areas specified in § 27.6(c)(2). (3) Authorizations for Block C, consisting of two paired channels of 6 megahertz each, will be based on those geographic areas specified in § 27.6(c)(2). (4) Authorizations for Block D, consisting of an unpaired channel block of 6 megahertz, will be based on those geographic areas specified in § 27.6(c)(3). (5) Authorizations for Block E, consisting of an unpaired channel block of 6 megahertz, will be based on those geographic areas specified in § 27.6(c)(1). (e) 1390-1392 MHz band. (f) The paired 1392-1395 MHz and 1432-1435 MHz bands. (g) 1670-1675 MHz band. (h) [Reserved] (i) 1710-1755 MHz and 2110-2155 MHz bands. (1) Authorizations for Block A, consisting of two paired channels of 10 megahertz each, will be based on those geographic areas specified in § 27.6(h)(1). (2) Authorizations for Block B, consisting of two paired channels of 10 megahertz each, will be based on those geographic areas specified in § 27.6(h)(2). (3) Authorizations for Block C, consisting of two paired channels of 5 megahertz each, will be based on those geographic areas specified in § 27.6(h)(2). (4) Authorizations for Blocks D, consisting of two paired channels of 5 megahertz each, will be based on those geographic areas specified in § 27.6(h)(3). (5) Authorizations for Blocks E, consisting of two paired channels of 5 megahertz each, will be based on those geographic areas specified in § 27.6(h)(3). (6) Authorizations for Block F, consisting of two paired channels of 10 megahertz each, will be based on those geographic areas specified in § 27.6(h)(3). (j) 1695-1710 MHz, 1755-1780 MHz and 2155-2180 MHz bands. (2) Initial authorizations for the 1755-1780 MHz and 2155-2180 MHz shall be based on the paired frequency blocks specified in § 27.5(h)(1) and (2) and the corresponding service areas specified in § 27.6(k)(1) and (2). (k) 600 MHz band. (l) 3700-3980 MHz band. (m) 3450-3550 MHz band. [62 FR 9658, Mar. 3, 1997, as amended at 63 FR 68954, Dec. 14, 1998; 65 FR 3146, Jan. 20, 2000; 67 FR 5511, Feb. 6, 2002; 67 FR 41854, June 20, 2002; 69 FR 5715, Feb. 6, 2004; 69 FR 39867, July 1, 2004; 69 FR 77950, Dec. 29, 2004; 70 FR 58065, Oct. 5, 2005; 72 FR 48845, Aug. 24, 2007; 79 FR 597, Jan. 6, 2014; 79 FR 32410, June 4, 2014; 79 FR 48536, Aug. 15, 2014; 82 FR 47160, Oct. 11, 2017; 85 FR 22881, Apr. 23, 2020; 86 FR 17952, Apr. 7, 2021] § 27.12 Eligibility. (a) Except as provided in paragraph (b) of this section and in §§ 27.604, 27.1201, 27.1202, and 27.1503, any entity other than those precluded by section 310 of the Communications Act of 1934, as amended, 47 U.S.C. 310, is eligible to hold a license under this part. (b) A person described in 47 U.S.C. 1404(c) is ineligible to hold a license that is required by 47 U.S.C. Chapter 13 (Middle Class Tax Relief and Job Creation Act of 2012 (Pub. L. 112-96, 125 Stat. 156 (2012)) to be assigned by a system of competitive bidding under § 309(j) of the Communications Act, 47 U.S.C. 309(j). [78 FR 50254, Aug. 16, 2013, as amended at 85 FR 43134, July 16, 2020] § 27.13 License period. Link to an amendment published at 91 FR 48742, July 31, 2026. (a) 2305-2320 MHz and 2345-2360 MHz bands. (b) 698-763 MHz, 776-793, 775-776, and 805-806 MHz bands. (c) 1390-1392 MHz band. (d) The paired 1392-1395 and 1432-1435 MHz bands. (e) 1670-1675 MHz band. (f) [Reserved] (g) 1710-1755 MHz and 2110-2155 MHz bands. (h) BRS and EBS. (i) 2000-2020 MHz and 2180-2200 MHz bands. (j) 1915-1920 MHz and 1995-2000 MHz bands. (k) 1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz bands. (l) 600 MHz band. (m) 3700-3980 MHz band. (n) 900 MHz broadband. (o) 3450-3550 MHz Band. [65 FR 3146, Jan. 20, 2000] Editorial Note: For Federal Register www.govinfo.gov. § 27.14 Construction requirements. Link to an amendment published at 91 FR 48742, July 31, 2026. Link to a correction published at 91 FR 55282, Aug. 27, 2026. (a) AWS and WCS licensees, with the exception of WCS licensees holding authorizations for the 600 MHz band, Block A in the 698-704 MHz and 728-734 MHz bands, Block B in the 704-710 MHz and 734-740 MHz bands, Block E in the 722-728 MHz band, Block C, C1, or C2 in the 746-757 MHz and 776-787 MHz bands, Block A in the 2305-2310 MHz and 2350-2355 MHz bands, Block B in the 2310-2315 MHz and 2355-2360 MHz bands, Block C in the 2315-2320 MHz band, Block D in the 2345-2350 MHz band, in the 3450-3550 MHz band, and in the 3700-3980 MHz band, and with the exception of licensees holding AWS authorizations in the 1915-1920 MHz and 1995-2000 MHz bands, the 2000-2020 MHz and 2180-2200 MHz bands, or 1695-1710 MHz, 1755-1780 MHz and 2155-2180 MHz bands, must, as a performance requirement, make a showing of “substantial service” in their license area within the prescribed license term set forth in § 27.13. “Substantial service” is defined as service which is sound, favorable and substantially above a level of mediocre service which just might minimally warrant renewal. Failure by any licensee to meet this requirement will result in forfeiture of the license and the licensee will be ineligible to regain it. (b)-(f) [Reserved] (g) WCS licensees holding EA authorizations for Block A in the 698-704 MHz and 728-734 MHz bands, cellular market authorizations for Block B in the 704-710 MHz and 734-740 MHz bands, or EA authorizations for Block E in the 722-728 MHz band, if the results of the first auction in which licenses for such authorizations are offered satisfy the reserve price for the applicable block, shall provide signal coverage and offer service over at least 35 percent of the geographic area of each of their license authorizations no later than June 13, 2013 (or within four years of initial license grant if the initial authorization in a market is granted after June 13, 2009), and shall provide such service over at least 70 percent of the geographic area of each of these authorizations by the end of the license term. In applying these geographic benchmarks, licensees are not required to include land owned or administered by government as a part of the relevant service area. Licensees may count covered government land for purposes of meeting their geographic construction benchmark, but are required to add the covered government land to the total geographic area used for measurement purposes. Licensees are required to include those populated lands held by tribal governments and those held by the Federal Government in trust or for the benefit of a recognized tribe. (1) If an EA or CMA licensee holding an authorization in these particular blocks fails to provide signal coverage and offer service over at least 35 percent of the geographic area of its license authorization by no later than June 13, 2013 (or within four years of initial license grant, if the initial authorization in a market is granted after June 13, 2009), the term of that license authorization will be reduced by two years and such licensee may be subject to enforcement action, including forfeitures. In addition, an EA or CMA licensee that provides signal coverage and offers service at a level that is below this interim benchmark may lose authority to operate in part of the remaining unserved areas of the license. (2) If any such EA or CMA licensee fails to provide signal coverage and offer service to at least 70 percent of the geographic area of its license authorization by the end of the license term, that licensee's authorization will terminate automatically without Commission action for those geographic portions of its license in which the licensee is not providing service, and those unserved areas will become available for reassignment by the Commission. Such licensee may also be subject to enforcement action, including forfeitures. In addition, an EA or CMA licensee that provides signal coverage and offers service at a level that is below this end-of-term benchmark may be subject to license termination. In the event that a licensee's authority to operate in a license area terminates automatically without Commission action, such areas will become available for reassignment pursuant to the procedures in paragraph (j) of this section. (3) For licenses under paragraph (g) of this section, the geographic service area to be made available for reassignment must include a contiguous area of at least 130 square kilometers (50 square miles), and areas smaller than a contiguous area of at least 130 square kilometers (50 square miles) will not be deemed unserved. (h) WCS licensees holding REAG authorizations for Block C in the 746-757 MHz and 776-787 MHz bands or REAG authorizations for Block C2 in the 752-757 MHz and 782-787 MHz bands shall provide signal coverage and offer service over at least 40 percent of the population in each EA comprising the REAG license area no later than June 13, 2013 (or within four years of initial license grant, if the initial authorization in a market is granted after June 13, 2009), and shall provide such service over at least 75 percent of the population of each of these EAs by the end of the license term. For purposes of compliance with this requirement, licensees should determine population based on the most recently available U.S. Census Data. (1) If a licensee holding a Block C authorization fails to provide signal coverage and offer service over at least 40 percent of the population in each EA comprising the REAG license area by no later than June 13, 2013 (or within four years of initial license grant if the initial authorization in a market is granted after June 13, 2009), the term of the license authorization will be reduced by two years and such licensee may be subject to enforcement action, including forfeitures. In addition, a licensee that provides signal coverage and offers service at a level that is below this interim benchmark may lose authority to operate in part of the remaining unserved areas of the license. (2) If a licensee holding a Block C authorization fails to provide signal coverage and offer service over at least 75 percent of the population in any EA comprising the REAG license area by the end of the license term, for each such EA that licensee's authorization will terminate automatically without Commission action for those geographic portions of its license in which the licensee is not providing service. Such licensee may also be subject to enforcement action, including forfeitures. In the event that a licensee's authority to operate in a license area terminates automatically without Commission action, such areas will become available for reassignment pursuant to the procedures in paragraph (j) of this section. In addition, a REAG licensee that provides signal coverage and offers service at a level that is below this end-of-term benchmark within any EA may be subject to license termination within that EA. (3) For licenses under paragraph (h), the geographic service area to be made available for reassignment must include a contiguous area of at least 130 square kilometers (50 square miles), and areas smaller than a contiguous area of at least 130 square kilometers (50 square miles) will not be deemed unserved. (i) WCS licensees holding EA authorizations for Block A in the 698-704 MHz and 728-734 MHz bands, cellular market authorizations for Block B in the 704-710 MHz and 734-740 MHz bands, or EA authorizations for Block E in the 722-728 MHz band, if the results of the first auction in which licenses for such authorizations in Blocks A, B, and E are offered do not satisfy the reserve price for the applicable block, as well as EA authorizations for Block C1 in the 746-752 MHz and 776-782 MHz bands, are subject to the following: (1) If a licensee holding a cellular market area or EA authorization subject to this paragraph (i) fails to provide signal coverage and offer service over at least 40 percent of the population in its license area by no later than June 13, 2013 (or within four years of initial license grant, if the initial authorization in a market is granted after June 13, 2009), the term of that license authorization will be reduced by two years and such licensee may be subject to enforcement action, including forfeitures. In addition, such licensee that provides signal coverage and offers service at a level that is below this interim benchmark may lose authority to operate in part of the remaining unserved areas of the license. For purposes of compliance with this requirement, licensees should determine population based on the most recently available U.S. Census Data. (2) If a licensee holding a cellular market area or EA authorization subject to this paragraph (i) fails to provide signal coverage and offer service over at least 75 percent of the population in its license area by the end of the license term, that licensee's authorization will terminate automatically without Commission action for those geographic portions of its license in which the licensee is not providing service, and those unserved areas will become available for reassignment by the Commission. Such licensee may also be subject to enforcement action, including forfeitures. In the event that a licensee's authority to operate in a license area terminates automatically without Commission action, such areas will become available for reassignment pursuant to the procedures in paragraph (j) of this section. In addition, such a licensee that provides signal coverage and offers service at a level that is below this end-of-term benchmark may be subject to license termination. For purposes of compliance with this requirement, licensees should determine population based on the most recently available U.S. Census Data. (3) For licenses under paragraph (i), the geographic service area to be made available for reassignment must include a contiguous area of at least 130 square kilometers (50 square miles), and areas smaller than a contiguous area of at least 130 square kilometers (50 square miles) will not be deemed unserved. (j) In the event that a licensee's authority to operate in a license area terminates automatically under paragraphs (g), (h), or (i) of this section, such areas will become available for reassignment pursuant to the following procedures: (1) The Wireless Telecommunications Bureau is delegated authority to announce by public notice that these license areas will be made available and establish a 30-day window during which third parties may file license applications to serve these areas. During this 30-day period, licensees that had their authority to operate terminate automatically for unserved areas may not file applications to provide service to these areas. Applications filed by third parties that propose areas overlapping with other applications will be deemed mutually exclusive, and will be resolved through an auction. The Wireless Telecommunications Bureau, by public notice, may specify a limited period before the filing of short-form applications (FCC Form 175) during which applicants may enter into a settlement to resolve their mutual exclusivity, subject to the provisions of § 1.935 of this chapter. (2) Following this 30-day period, the original licensee and third parties can file license applications for remaining unserved areas where licenses have not been issued or for which there are no pending applications. If the original licensee or a third party files an application, that application will be placed on public notice for 30 days. If no mutually exclusive application is filed, the application will be granted, provided that a grant is found to be in the public interest. If a mutually exclusive application is filed, it will be resolved through an auction. The Wireless Telecommunications Bureau, by public notice, may specify a limited period before the filing of short-form applications (FCC Form 175) during which applicants may enter into a settlement to resolve their mutual exclusivity, subject to the provisions of § 1.935 of this chapter. (3) The licensee will have one year from the date the new license is issued to complete its construction and provide signal coverage and offer service over 100 percent of the geographic area of the new license area. If the licensee fails to meet this construction requirement, its license will automatically terminate without Commission action and it will not be eligible to apply to provide service to this area at any future date. (k) Licensees holding WCS or AWS authorizations in the spectrum blocks enumerated in paragraphs (g), (h), (i), (q), (r), (s), (t), (v), and (w) of this section, including any licensee that obtained its license pursuant to the procedures set forth in paragraph (j) of this section, shall demonstrate compliance with performance requirements by filing a construction notification with the Commission, within 15 days of the expiration of the applicable benchmark, in accordance with the provisions set forth in § 1.946(d) of this chapter. The licensee must certify whether it has met the applicable performance requirements. The licensee must file a description and certification of the areas for which it is providing service. The construction notifications must include electronic coverage maps, supporting technical documentation and any other information as the Wireless Telecommunications Bureau may prescribe by public notice. (l)-(n) [Reserved] (o) With respect to initial BRS licenses issued on or after November 6, 2009, the licensee must make a showing of substantial service within four years from the date of issue of the license. With respect to EBS licenses issued after October 25, 2019, the licensee must comply with paragraph (u) of this section. “Substantial service” is defined as service which is sound, favorable, and substantially above a level of mediocre service which just might minimally warrant renewal. Substantial service for BRS and EBS licensees is satisfied if a licensee meets the requirements of paragraph (o)(1), (2), or (3) of this section. If a licensee has not met the requirements of paragraph (o)(1), (2), or (3) of this section, then demonstration of substantial service shall proceed on a case-by-case basis. Except as provided in paragraphs (o)(4) and (5) of this section, all substantial service determinations will be made on a license-by-license basis. Failure by any licensee to demonstrate substantial service will result in forfeiture of the license and the licensee will be ineligible to regain it. (1) A BRS or EBS licensee has provided “substantial service” by: (i) Constructing six permanent links per one million people for licensees providing fixed point-to-point services; (ii) Providing coverage of at least 30 percent of the population of the licensed area for licensees providing mobile services or fixed point-to-multipoint services; (iii) Providing service to “rural areas” (a county (or equivalent) with a population density of 100 persons per square mile or less, based upon the most recently available Census data) and areas with limited access to telecommunications services: (A) For mobile service, where coverage is provided to at least 75% of the geographic area of at least 30% of the rural areas within its service area; or (B) for fixed service, where the BRS or EBS licensee has constructed at least one end of a permanent link in at least 30% of the rural areas within its licensed area. (iv) Providing specialized or technologically sophisticated service that does not require a high level of coverage to benefit consumers; or (v) Providing service to niche markets or areas outside the areas served by other licensees. (2) An EBS license initially issued prior to October 25, 2019 has provided “substantial service” when: (i) The EBS licensee is using its spectrum (or spectrum to which the EBS licensee's educational services are shifted) to provide educational services within the EBS licensee's GSA; (ii) the EBS licensee's license is actually being used to serve the educational mission of one or more accredited public or private schools, colleges or universities providing formal educational and cultural development to enrolled students; or (iii) The level of service provided by the EBS licensee meets or exceeds the minimum usage requirements specified in § 27.1214 contained in the edition of 47 CFR parts 20 through 39, revised as of October 1, 2017. (3) An EBS or BRS licensee may be deemed to provide substantial service through a leasing arrangement if the lessee is providing substantial service under paragraph (o)(1) of this section. (4) If the GSA of a licensee is less than 1924 square miles in size, and there is an overlapping co-channel station licensed or leased by the licensee or its affiliate, substantial service may be demonstrated by meeting the requirements of paragraph (o)(1) or (o)(2) of this section with respect to the combined GSAs of both stations. (5) If the GSA of a BTA authorization holder, is less than one-half of the area within the BTA for every BRS channel, substantial service may be demonstrated for the licenses in question by meeting the requirements of paragraph (o)(1) or (o)(2) of this section with respect to the combined GSAs of the BTA authorization holder, together with any incumbent authorizations licensed or leased by the licensee or its affiliates. (p) This section enumerates performance requirements for licensees holding authorizations for Block A in the 2305-2310 MHz and 2350-2355 MHz bands, Block B in the 2310-2315 MHz and 2355-2360 MHz bands, Block C in the 2315-2320 MHz band, and Block D in the 2345-2350 MHz band. (1) For mobile and point-to-multipoint systems in Blocks A and B, and point-to-multipoint systems in Blocks C and D, a licensee must provide reliable signal coverage and offer service to at least 40 percent of the license area's population by March 13, 2017, and to at least 75 percent of the license area's population by September 13, 2019. If, when filing the construction notification required under § 1.946(d) of this chapter, a WCS licensee demonstrates that 25 percent or more of the license area's population for Block A, B or D is within a coordination zone as defined by § 27.73(a) of the rules, the foregoing population benchmarks are reduced to 25 and 50 percent, respectively. The percentage of a license area's population within a coordination zone equals the sum of the Census Block Centroid Populations within the area, divided by the license area's total population. (2) For point-to-point fixed systems, except those deployed in the Gulf of Mexico license area, a licensee must construct and operate a minimum of 15 point-to-point links per million persons (one link per 67,000 persons) in a license area by March 13, 2017, and 30 point-to-point links per million persons (one link per 33,500 persons) in a licensed area by September 13, 2019. The exact link requirement is calculated by dividing a license area's total population by 67,000 and 33,500 for the respective milestones, and then rounding upwards to the next whole number. For a link to be counted towards these benchmarks, both of its endpoints must be located in the license area. If only one endpoint of a link is located in a license area, it can be counted as a one- half link towards the benchmarks. (3) For point-to-point fixed systems deployed on any spectrum block in the Gulf of Mexico license area, a licensee must construct and operate a minimum of 15 point-to-point links by March 13, 2017, and a minimum of 15 point-to-point links by September 13, 2019. (4) Under paragraph (p)(2) and (p)(3) of this section, each fixed link must provide a minimum bit rate, in bits per second, equal to or greater than the bandwidth specified by the emission designator in Hertz ( e.g., (5) If an initial authorization for a license area is granted after March 13, 2013, then the applicable benchmarks in paragraphs (p)(1), (2) and (3) of this section must be met within 48 and 78 months, respectively, of the initial authorization grant date. (6) Licensees must use the most recently available U.S. Census Data at the time of measurement to meet these performance requirements. (7) Licensees must certify compliance with the applicable performance requirements by filing a construction notification with the Commission, within 15 days of the expiration of the relevant performance milestone, pursuant to § 1.946(d) of this chapter. Each construction notification must include electronic coverage maps, supporting technical documentation, and any other information as the Wireless Telecommunications Bureau may prescribe by public notice. Electronic coverage maps must accurately depict the boundaries of each license area (Regional Economic Area Grouping, REAG, or Major Economic Area, MEA) in the licensee's service territory. Further, REAG maps must depict MEA boundaries and MEA maps must depict Economic Area boundaries. If a licensee does not provide reliable signal coverage to an entire license area, its map must accurately depict the boundaries of the area or areas within each license area not being served. Each licensee also must file supporting documentation certifying the type of service it is providing for each REAG or MEA within its service territory and the type of technology used to provide such service. Supporting documentation must include the assumptions used to create the coverage maps, including the propagation model and the signal strength necessary to provide reliable service with the licensee's technology. (8) If a licensee fails to meet any applicable performance requirement, its authorization will terminate automatically without further Commission action as of the applicable performance milestone and the licensee will be ineligible to regain it. (q) The following provisions apply to any licensee holding an AWS authorization in the 2000-2020 MHz and 2180-2200 MHz bands (an “AWS-4 licensee”): (1) An AWS-4 licensee shall provide terrestrial signal coverage and offer terrestrial service within four (4) years from the date of the license to at least forty (40) percent of the total population in the aggregate service areas that it has licensed in the 2000-2020 MHz and 2180-2200 MHz bands (“AWS-4 Interim Buildout Requirement”). For purposes of this subpart, a licensee's total population shall be calculated by summing the population of each license area that a licensee holds in the 2000-2020 MHz and 2180-2200 MHz bands; and (2) An AWS-4 licensee shall provide terrestrial signal coverage and offer terrestrial service within seven (7) years from the date of the license to at least seventy (70) percent of the population in each of its license areas in the 2000-2020 MHz and 2180-2200 MHz bands (“AWS-4 Final Buildout Requirement”). (3) If any AWS-4 licensee fails to establish that it meets the AWS-4 Interim Buildout Requirement, the AWS-4 Final Buildout requirement shall be accelerated by one year from (seven to six years). (4) If any AWS-4 licensee fails to establish that it meets the AWS-4 Final Buildout Requirement in any of its license areas in the 2000-2020 MHz and 2180-2200 MHz bands, its authorization for each license area in which it fails to meet the requirement shall terminate automatically without Commission action. To the extent that the AWS-4 licensee also holds the 2 GHz MSS rights for the affected license area, failure to meet the AWS-4 Final Buildout Requirement in an EA shall also result in the MSS protection rule in § 27.1136 no longer applying in that license area. (5) To demonstrate compliance with these performance requirements, licensees shall use the most recently available U.S. Census Data at the time of measurement and shall base their measurements of population served on areas no larger than the Census Tract level. The population within a specific Census Tract (or other acceptable identifier) will only be deemed served by the licensee if it provides signal coverage to and offers service within the specific Census Tract (or other acceptable identifier). To the extent the Census Tract (or other acceptable identifier) extends beyond the boundaries of a license area, a licensee with authorizations for such areas may only include the population within the Census Tract (or other acceptable identifier) towards meeting the performance requirement of a single, individual license. (6) Failure by any AWS-4 licensee to meet the AWS-4 Final Buildout Requirement in paragraph (q)(4) of this section will result in forfeiture of the license and the licensee will be ineligible to regain it. (r) The following provisions apply to any licensee holding an AWS authorization in the 1915-1920 MHz and 1995-2000 MHz bands: (1) A licensee shall provide signal coverage and offer service within four (4) years from the date of the initial license to at least forty (40) percent of the population in each of its licensed areas (“Interim Buildout Requirement”). (2) A licensee shall provide signal coverage and offer service within ten (10) years from the date of the initial license to at least seventy-five (75) percent of the population in each of its licensed areas (“Final Buildout Requirement”). (3) If a licensee fails to establish that it meets the Interim Buildout Requirement for a particular licensed area, then the Final Buildout Requirement (in this paragraph (r)) and the license term (as set forth in § 27.13(j)) for each license area in which it fails to meet the Interim Buildout Requirement shall be accelerated by two years (from ten to eight years). (4) If a licensee fails to establish that it meets the Final Buildout Requirement for a particular licensed area, its authorization for each license area in which it fails to meet the Final Buildout Requirement shall terminate automatically without Commission action and the licensee will be ineligible to regain it if the Commission makes the license available at a later date. (5) To demonstrate compliance with these performance requirements, licensees shall use the most recently available U.S. Census Data at the time of measurement and shall base their measurements of population served on areas no larger than the Census Tract level. The population within a specific Census Tract (or other acceptable identifier) will only be deemed served by the licensee if it provides signal coverage to and offers service within the specific Census Tract (or other acceptable identifier). To the extent the Census Tract (or other acceptable identifier) extends beyond the boundaries of a license area, a licensee with authorizations for such areas may only include the population within the Census Tract (or other acceptable identifier) towards meeting the performance requirement of a single, individual license. (s) The following provisions apply to any licensee holding an AWS authorization in the 1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz bands: (1) A licensee shall provide reliable signal coverage and offer service within six (6) years from the date of the initial license to at least forty (40) percent of the population in each of its licensed areas (“Interim Buildout Requirement”). (2) A licensee shall provide reliable signal coverage and offer service within twelve (12) years from the date of the initial license to at least seventy-five (75) percent of the population in each of its licensed areas (“Final Buildout Requirement”). (3) If a licensee fails to establish that it meets the Interim Buildout Requirement for a particular licensed area, then the Final Buildout Requirement (in this paragraph (s)) and the AWS license term (as set forth in § 27.13(k)) for each license area in which it fails to meet the Interim Buildout Requirement shall be accelerated by two (2) years (from twelve (12) to ten (10) years). (4) If a licensee fails to establish that it meets the Final Buildout Requirement for a particular licensed area, its authorization for each license area in which it fails to meet the Final Buildout Requirement shall terminate automatically without Commission action and the licensee will be ineligible to regain it if the Commission makes the license available at a later date. (5) To demonstrate compliance with these performance requirements, licensees shall use the most recently available U.S. Census Data at the time of measurement and shall base their measurements of population served on areas no larger than the Census Tract level. The population within a specific Census Tract (or other acceptable identifier) will be deemed served by the licensee only if it provides signal coverage to and offers service within the specific Census Tract (or other acceptable identifier). To the extent the Census Tract (or other acceptable identifier) extends beyond the boundaries of a license area, a licensee with authorizations for such areas may include only the population within the Census Tract (or other acceptable identifier) towards meeting the performance requirement of a single, individual license. For the Gulf of Mexico license area, the licensee shall demonstrate compliance with these performance requirements, using off-shore platforms, including production, manifold, compression, pumping and valving platforms as a proxy for population in the Gulf of Mexico. (t) The following provisions apply to any licensee holding an authorization in the 600 MHz band: (1) A licensee shall provide reliable signal coverage and offer service within six (6) years from the date of the initial license to at least forty (40) percent of the population in each of its license areas (“Interim Buildout Requirement”). (2) A licensee shall provide reliable signal coverage and offer service within twelve (12) years from the date of the initial license to at least seventy-five (75) percent of the population in each of its license areas (“Final Buildout Requirement”). (3) If a licensee fails to establish that it meets the Interim Buildout Requirement for a particular licensed area, then the Final Buildout Requirement (in this paragraph (t)) and the license term (as set forth in § 27.13(l)) for each license area in which it fails to meet the Interim Buildout Requirement shall be accelerated by two (2) years (from twelve (12) to ten (10) years). (4) If a licensee fails to establish that it meets the Final Buildout Requirement for a particular license area, its authorization for each license area in which it fails to meet the Final Buildout Requirement shall terminate automatically without Commission action, and the licensee will be ineligible to regain it if the Commission makes the license available at a later date. (5) To demonstrate compliance with these performance requirements, licensees shall use the most recently available decennial U.S. Census Data at the time of measurement and shall base their measurements of population served on areas no larger than the Census Tract level. The population within a specific Census Tract (or other acceptable identifier) will be deemed served by the licensee only if it provides reliable signal coverage to and offers service within the specific Census Tract (or other acceptable identifier). To the extent the Census Tract (or other acceptable identifier) extends beyond the boundaries of a license area, a licensee with authorizations for such areas may include only the population within the Census Tract (or other acceptable identifier) towards meeting the performance requirement of a single, individual license. For the Gulf of Mexico license area, the licensee shall demonstrate compliance with these performance requirements, using off-shore platforms, including production, manifold, compression, pumping and valving platforms as a proxy for population in the Gulf of Mexico. (u) This section enumerates performance requirements for EBS licenses initially issued after October 25, 2019. Licensees shall demonstrate compliance with performance requirements by filing a construction notification with the Commission, within 15 days of the expiration of the applicable benchmark, in accordance with the provisions set forth in § 1.946(d) of this chapter. (1) All EBS licenses initially issued after October 25, 2019, must demonstrate compliance with the performance requirements described in this paragraph (u). All equipment used to demonstrate compliance must be in use and actually providing service, either for internal use or to unaffiliated customers, as of the interim deadline or final deadline, whichever is applicable. (2) Except for licensees with licenses applied for in the Tribal Priority Window, licensees providing mobile or point-to-multipoint service must demonstrate reliable signal coverage of 50% of the population of the geographic service area within four years of initial license grant, and 80% of the population of the geographic service area within eight years of initial license grant. (3) Except for licensees with licenses applied for in the Tribal Priority Window, licensees providing fixed point-to-point service must demonstrate operation of one link for each 50,000 persons in the geographic service area within four years of initial license grant, and one link for each 25,000 persons in the geographic service area within eight years of initial license grant. (4) Licensees with licenses applied for in the Tribal Priority Window must make an interim showing under paragraph (u)(2) or (3) of this section within two years of initial license grant. Licensees with licenses applied for in the Tribal Priority Window must make a final showing under paragraph (u)(2) or (3) of this section within five years of initial license grant. (5) If an EBS licensee (other than the licensee of a license issued pursuant to the Tribal Priority Window) fails to meet interim performance requirements described in paragraph (u)(2) or (3) of this section, the deadline for that authorization to meet its final performance requirement will be advanced by two years. If an EBS licensee of a license issued pursuant to the Tribal Priority Window fails to meet interim performance requirements described in paragraph (u)(2) or (3) of this section, the deadline for that authorization to meet its final performance requirement will be advanced by one year. If an EBS licensee fails to meet its final performance requirement, its license shall automatically terminate without specific Commission action. (v) The following provisions apply to any licensee holding an authorization in the 3700-3980 MHz band: (1) Licensees relying on mobile or point-to-multipoint service shall provide reliable signal coverage and offer service within eight (8) years from the date of the initial license to at least forty-five (45) percent of the population in each of its license areas (“First Buildout Requirement”). Licensee shall provide reliable signal coverage and offer service within twelve (12) years from the date of the initial license to at least eighty (80) percent of the population in each of its license areas (“Second Buildout Requirement”). Licensees relying on point-to-point service shall demonstrate within eight years of the license issue date that they have four links operating and providing service to customers or for internal use if the population within the license area is equal to or less than 268,000 and, if the population is greater than 268,000, that they have at least one link in operation and providing service to customers, or for internal use, per every 67,000 persons within a license area (“First Buildout Requirement”). Licensees relying on point-to-point service shall demonstrate within 12 years of the license issue date that they have eight links operating and providing service to customers or for internal use if the population within the license area is equal to or less than 268,000 and, if the population within the license area is greater than 268,000, shall demonstrate they are providing service and have at least two links in operation per every 67,000 persons within a license area (“Second Buildout Requirement”). (2) In the alternative, a licensee offering Internet of Things-type services shall provide geographic area coverage within eight (8) years from the date of the initial license to thirty-five (35) percent of the license (“First Buildout Requirement”). A licensee offering Internet of Things-type services shall provide geographic area coverage within twelve (12) years from the date of the initial license to sixty-five (65) percent of the license (“Second Buildout Requirement”). (3) If a licensee fails to establish that it meets the First Buildout Requirement for a particular license area, the licensee's Second Buildout Requirement deadline and license term will be reduced by two years. If a licensee fails to establish that it meets the Second Buildout Requirement for a particular license area, its authorization for each license area in which it fails to meet the Second Buildout Requirement shall terminate automatically without Commission action, and the licensee will be ineligible to regain it if the Commission makes the license available at a later date. (4) To demonstrate compliance with these performance requirements, licensees shall use the most recently available decennial U.S. Census Data at the time of measurement and shall base their measurements of population or geographic area served on areas no larger than the Census Tract level. The population or area within a specific Census Tract (or other acceptable identifier) will be deemed served by the licensee only if it provides reliable signal coverage to and offers service within the specific Census Tract (or other acceptable identifier). To the extent the Census Tract (or other acceptable identifier) extends beyond the boundaries of a license area, a licensee with authorizations for such areas may include only the population or geographic area within the Census Tract (or other acceptable identifier) towards meeting the performance requirement of a single, individual license. If a licensee does not provide reliable signal coverage to an entire license area, the license must provide a map that accurately depicts the boundaries of the area or areas within each license area not being served. Each licensee also must file supporting documentation certifying the type of service it is providing for each licensed area within its service territory and the type of technology used to provide such service. Supporting documentation must include the assumptions used to create the coverage maps, including the propagation model and the signal strength necessary to provide reliable service with the licensee's technology. (w) The following provisions apply to any licensee holding an authorization in the 3450-3550 MHz band: (1) Performance requirements. (i) Mobile/point-to-multipoint service. (ii) Point-to-point service. (iii) Internet of Things service. (2) Failure to meet performance requirements. (3) Compliance procedures. [62 FR 9658, Mar. 3, 1997] Editorial Note: For Federal Register www.govinfo.gov. § 27.15 Geographic partitioning and spectrum disaggregation. (a) Eligibility. (2) AWS and WCS licensees may apply to partition their licensed geographic service area or disaggregate their licensed spectrum at any time following the grant of their licenses. (b) Technical Standards Partitioning. (2) Disaggregation. (3) Combined partitioning and disaggregation. (4) Signal levels. (c) License term. [62 FR 9658, Mar. 3, 1997, as amended at 63 FR 68954, Dec. 14, 1998; 65 FR 3146, Jan. 20, 2000; 65 FR 57268, Sept. 21, 2000; 67 FR 45373, July 9, 2002; 69 FR 5715, Feb. 6, 2004; 72 FR 48848, Aug. 24, 2007; 78 FR 8268, Feb. 5, 2013; 78 FR 50255, Aug. 16, 2013; 79 FR 596, Jan. 6, 2014; 79 FR 32412, June 4, 2014; 79 FR 48537, Aug. 15, 2014; 82 FR 41548, Sept. 1, 2017] § 27.16 Network access requirements for Block C in the 746-757 and 776-787 MHz bands. (a) Applicability. (b) Use of devices and applications. (1) Insofar as such use would not be compliant with published technical standards reasonably necessary for the management or protection of the licensee's network, or (2) As required to comply with statute or applicable government regulation. (c) Technical standards. (1) Standards shall include technical requirements reasonably necessary for third parties to access a licensee's network via devices or applications without causing objectionable interference to other spectrum users or jeopardizing network security. The potential for excessive bandwidth demand alone shall not constitute grounds for denying, limiting or restricting access to the network. (2) To the extent a licensee relies on standards established by an independent standards-setting body which is open to participation by representatives of service providers, equipment manufacturers, application developers, consumer organizations, and other interested parties, the standards will carry a presumption of reasonableness. (3) A licensee shall publish its technical standards, which shall be non-proprietary, no later than the time at which it makes such standards available to any preferred vendors, so that the standards are readily available to customers, equipment manufacturers, application developers, and other parties interested in using or developing products for use on a licensee's networks. (d) Access requests. (2) If a licensee determines that a request for access would violate its technical standards or regulatory requirements, the licensee shall expeditiously provide a written response to the requester specifying the basis for denying access and providing an opportunity for the requester to modify its request to satisfy the licensee's concerns. (e) Handset locking prohibited. (f) Burden of proof. [72 FR 48849, Aug. 24, 2007] Subpart C—Technical Standards § 27.50 Power limits and duty cycle. Link to an amendment published at 91 FR 48743, July 31, 2026. (a) The following power limits and related requirements apply to stations transmitting in the 2305-2320 MHz band or the 2345-2360 MHz band. (1) Base and fixed stations. (A) The average equivalent isotropically radiated power (EIRP) must not exceed 2,000 watts within any 5 megahertz of authorized bandwidth and must not exceed 400 watts within any 1 megahertz of authorized bandwidth. (B) The peak-to-average power ratio (PAPR) of the transmitter output power must not exceed 13 dB. The PAPR measurements should be made using either an instrument with complementary cumulative distribution function (CCDF) capabilities to determine that PAPR will not exceed 13 dB for more than 0.1 percent of the time or other Commission approved procedure. The measurement must be performed using a signal corresponding to the highest PAPR expected during periods of continuous transmission. (ii) For base and fixed stations transmitting in the 2315-2320 MHz band or the 2345-2350 MHz band, the peak EIRP must not exceed 2,000 watts. (2) Fixed customer premises equipment stations. (3) Mobile and portable stations. except that (ii) Mobile and portable stations are not permitted to transmit in the 2315-2320 MHz and 2345-2350 MHz bands. (iii) Automatic transmit power control. (iv) Prohibition on external vehicle-mounted antennas. (b) The following power and antenna height limits apply to transmitters operating in the 746-758 MHz, 775-788 MHz and 805-806 MHz bands: (1) Fixed and base stations transmitting a signal in the 757-758 and 775-776 MHz bands must not exceed an effective radiated power (ERP) of 1000 watts and an antenna height of 305 m height above average terrain (HAAT), except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 1000 watts ERP in accordance with Table 1 of this section. (2) Fixed and base stations transmitting a signal in the 746-757 MHz and 776-787 MHz bands with an emission bandwidth of 1 MHz or less must not exceed an ERP of 1000 watts and an antenna height of 305 m HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 1000 watts ERP in accordance with Table 1 of this section. (3) Fixed and base stations located in a county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, and transmitting a signal in the 746-757 MHz and 776-787 MHz bands with an emission bandwidth of 1 MHz or less must not exceed an ERP of 2000 watts and an antenna height of 305 m HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 2000 watts ERP in accordance with Table 2 of this section. (4) Fixed and base stations transmitting a signal in the 746-757 MHz and 776-787 MHz bands with an emission bandwidth greater than 1 MHz must not exceed an ERP of 1000 watts/MHz and an antenna height of 305 m HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 1000 watts/MHz ERP in accordance with Table 3 of this section. (5) Fixed and base stations located in a county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, and transmitting a signal in the 746-757 MHz and 776-787 MHz bands with an emission bandwidth greater than 1 MHz must not exceed an ERP of 2000 watts/MHz and an antenna height of 305 m HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 2000 watts/MHz ERP in accordance with Table 4 of this section. (6) Licensees of fixed or base stations transmitting a signal in the 746-757 MHz and 776-787 MHz bands at an ERP greater than 1000 watts must comply with the provisions set forth in paragraph (b)(8) of this section and § 27.55(c). (7) Licensees seeking to operate a fixed or base station located in a county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, and transmitting a signal in the 746-757 MHz and 776-787 MHz bands at an ERP greater than 1000 watts must: (i) Coordinate in advance with all licensees authorized to operate in the 698-758 MHz, 775-788, and 805-806 MHz bands within 120 kilometers (75 miles) of the base or fixed station; (ii) coordinate in advance with all regional planning committees, as identified in § 90.527 of this chapter, with jurisdiction within 120 kilometers (75 miles) of the base or fixed station. (8) Licensees authorized to transmit in the 746-757 MHz and 776-787 MHz bands and intending to operate a base or fixed station at a power level permitted under the provisions of paragraph (b)(6) of this section must provide advanced notice of such operation to the Commission and to licensees authorized in their area of operation. Licensees who must be notified are all licensees authorized to operate in the 758-775 MHz and 788-805 MHz bands under part 90 of this chapter within 75 km of the base or fixed station and all regional planning committees, as identified in § 90.527 of this chapter, with jurisdiction within 75 km of the base or fixed station. Notifications must provide the location and operating parameters of the base or fixed station, including the station's ERP, antenna coordinates, antenna height above ground, and vertical antenna pattern, and such notifications must be provided at least 90 days prior to the commencement of station operation. (9) Control stations and mobile stations transmitting in the 746-757 MHz, 776-788 MHz, and 805-806 MHz bands and fixed stations transmitting in the 787-788 MHz and 805-806 MHz bands are limited to 30 watts ERP. (10) Portable stations (hand-held devices) transmitting in the 746-757 MHz, 776-788 MHz, and 805-806 MHz bands are limited to 3 watts ERP. (11) For transmissions in the 757-758, 775-776, 787-788, and 805-806 MHz bands, maximum composite transmit power shall be measured over any interval of continuous transmission using instrumentation calibrated in terms of RMS-equivalent voltage. The measurement results shall be properly adjusted for any instrument limitations, such as detector response times, limited resolution bandwidth capability when compared to the emission bandwidth, etc., so as to obtain a true maximum composite measurement for the emission in question over the full bandwidth of the channel. (12) For transmissions in the 746-757 and 776-787 MHz bands, licensees may employ equipment operating in compliance with either the measurement techniques described in paragraph (b)(11) of this section or a Commission-approved average power technique. In both instances, equipment employed must be authorized in accordance with the provisions of § 27.51. (c) The following power and antenna height requirements apply to stations transmitting in the 600 MHz band and the 698-746 MHz band: (1) Fixed and base stations transmitting a signal with an emission bandwidth of 1 MHz or less must not exceed an effective radiated power (ERP) of 1000 watts and an antenna height of 305 m height above average terrain (HAAT), except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 1000 watts ERP in accordance with Table 1 of this section; (2) Fixed and base stations located in a county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, and transmitting a signal with an emission bandwidth of 1 MHz or less must not exceed an ERP of 2000 watts and an antenna height of 305 m HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 2000 watts ERP in accordance with Table 2 of this section; (3) Fixed and base stations transmitting a signal with an emission bandwidth greater than 1 MHz must not exceed an ERP of 1000 watts/MHz and an antenna height of 305 m HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 1000 watts/MHz ERP in accordance with Table 3 of this section; (4) Fixed and base stations located in a county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, and transmitting a signal with an emission bandwidth greater than 1 MHz must not exceed an ERP of 2000 watts/MHz and an antenna height of 305 m HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 2000 watts/MHz ERP in accordance with Table 4 of this section; (5) Licensees, except for licensees operating in the 600 MHz downlink band, seeking to operate a fixed or base station located in a county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, and transmitting a signal at an ERP greater than 1000 watts must: (i) Coordinate in advance with all licensees authorized to operate in the 698-758 MHz, 775-788, and 805-806 MHz bands within 120 kilometers (75 miles) of the base or fixed station; (ii) coordinate in advance with all regional planning committees, as identified in § 90.527 of this chapter, with jurisdiction within 120 kilometers (75 miles) of the base or fixed station. (6) Licensees of fixed or base stations transmitting a signal at an ERP greater than 1000 watts and greater than 1000 watts/MHz must comply with the provisions of paragraph (c)(8) of this section and § 27.55(b), except that licensees of fixed or base stations located in a county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, must comply with the provisions of paragraph (c)(8) of this section and § 27.55(b) only if transmitting a signal at an ERP greater than 2000 watts and greater than 2000 watts/MHz; (7) A licensee authorized to operate in the 710-716 or 740-746 MHz bands may operate a fixed or base station at an ERP up to a total of 50 kW within its authorized, 6 megahertz spectrum block if the licensee complies with the provisions of § 27.55(b). The antenna height for such stations is limited only to the extent required to satisfy the requirements of § 27.55(b). (8) Licensees intending to operate a base or fixed station at a power level permitted under the provisions of paragraph (c)(6) of this section must provide advanced notice of such operation to the Commission and to licensees authorized in their area of operation. Licensees who must be notified are all licensees authorized under this part to operate on an adjacent spectrum block within 75 km of the base or fixed station. Notifications must provide the location and operating parameters of the base or fixed station, including the station's ERP, antenna coordinates, antenna height above ground, and vertical antenna pattern, and such notifications must be provided at least 90 days prior to the commencement of station operation. (9) Control and mobile stations in the 698-746 MHz band are limited to 30 watts ERP. (10) Portable stations (hand-held devices) in the 600 MHz uplink band and the 698-746 MHz band, and fixed and mobile stations in the 600 MHz uplink band are limited to 3 watts ERP. (11) Licensees may employ equipment operating in compliance with either the measurement techniques described in paragraph (b)(11) of this section or a Commission-approved average power technique. In both instances, equipment employed must be authorized in accordance with the provisions of § 27.51. (12) A licensee authorized to operate in the 716-722 or 722-728 MHz bands may operate a fixed or base station at an ERP up to a total of 50 kW within its authorized, 6 megahertz spectrum block if the licensee complies with the provisions of § 27.55(b), obtains written concurrences from all affected licensees in the 698-746 MHz bands within 120 km of the proposed high power site, and files a copy of each written concurrences with the Wireless Telecommunications Bureau on FCC Form 601. The antenna height for such stations is limited only to the extent required to satisfy the requirements of § 27.55(b). (13) Licensees authorized to operate in the 716-722 or 722-728 MHz bands must coordinate with licensees with uplink operations in the 698-716 MHz band to mitigate the potential for harmful interference. Licensees authorized to operate in the 716-722 or 722-728 MHz bands must mitigate harmful interference to licensees' uplink operations in the 698-716 MHz band within 30 days after receiving written notice from the affected licensees. A licensee authorized to operate in the 716-722 or 722-728 MHz bands must ensure that 716-728 MHz band transmissions are filtered at least to the extent that the 716-728 MHz band transmissions are filtered in markets where the 716-728 MHz band licensee holds any license in the 698-716 band, as applicable. For purposes of coordination and mitigations measures in paragraphs (i) and (iii) below, network will be deemed “deployed” as of the date upon which the network is able to support a commercial mobile or data service. The coordination and mitigation measures should include, but are not limited to, the following: (i) If a licensee operating in the 698-716 and 728-746 MHz band deploys a network after the 716-722 or 722-728 MHz bands licensee deploys a network on its 716-722 or 722-728 MHz spectrum in the same geographic market, the 716-722 or 722-728 MHz bands licensee will work with the licensee with uplink operations in the 698-716 MHz band to identify sites that will require additional filtering, and will help the licensee operating in the 698-716 and 728-746 MHz bands to identify proper filters; (ii) The 716-722 or 722-728 MHz bands licensee must permit licensees operating in the 698-716 and 728-746 MHz bands to collocate on the towers it owns at prevailing market rates; and (iii) If a 698-716 and 728-746 MHz bands licensee deploys a network before a licensee in the 716-722 or 722-728 MHz bands deploys a network in the same geographic market, the 716-722 or 722-728 MHz bands licensee will work with licensees in the 698-716 and 728-746 MHz bands to identify sites that will need additional filtering and will purchase and pay for installation of required filters on such sites. (d) The following power and antenna height requirements apply to stations transmitting in the 1695-1710 MHz, 1710-1755 MHz, 1755-1780 MHz, 1915-1920 MHz, 1995-2000 MHz, 2000-2020 MHz, 2110-2155 MHz, 2155-2180 MHz and 2180-2200 MHz bands: (1) The power of each fixed or base station transmitting in the 1995-2000 MHz, 2110-2155 MHz, 2155-2180 MHz or 2180-2200 MHz band and located in any county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, is limited to: (i) An equivalent isotropically radiated power (EIRP) of 3280 watts when transmitting with an emission bandwidth of 1 MHz or less; (ii) An EIRP of 3280 watts/MHz when transmitting with an emission bandwidth greater than 1 MHz. (2) The power of each fixed or base station transmitting in the 1995-2000 MHz, the 2110-2155 MHz 2155-2180 MHz band, or 2180-2200 MHz band and situated in any geographic location other than that described in paragraph (d)(1) of this section is limited to: (i) An equivalent isotropically radiated power (EIRP) of 1640 watts when transmitting with an emission bandwidth of 1 MHz or less; (ii) An EIRP of 1640 watts/MHz when transmitting with an emission bandwidth greater than 1 MHz. (3) A licensee operating a base or fixed station in the 2110-2155 MHz band utilizing a power greater than 1640 watts EIRP and greater than 1640 watts/MHz EIRP must coordinate such operations in advance with all Government and non-Government satellite entities in the 2025-2110 MHz band. A licensee operating a base or fixed station in the 2110-2180 MHz band utilizing power greater than 1640 watts EIRP and greater than 1640 watts/MHz EIRP must be coordinated in advance with the following licensees authorized to operate within 120 kilometers (75 miles) of the base or fixed station operating in this band: All Broadband Radio Service (BRS) licensees authorized under this part in the 2155-2160 MHz band and all advanced wireless services (AWS) licensees authorized to operate on adjacent frequency blocks in the 2110-2180 MHz band. (4) Fixed, mobile, and portable (hand-held) stations operating in the 1710-1755 MHz band and mobile and portable stations operating in the 1695-1710 MHz and 1755-1780 MHz bands are limited to 1 watt EIRP. Fixed stations operating in the 1710-1755 MHz band are limited to a maximum antenna height of 10 meters above ground. Mobile and portable stations operating in these bands must employ a means for limiting power to the minimum necessary for successful communications. (5) Equipment employed must be authorized in accordance with the provisions of § 24.51. Power measurements for transmissions by stations authorized under this section may be made either in accordance with a Commission-approved average power technique or in compliance with paragraph (d)(6) of this section. In measuring transmissions in this band using an average power technique, the peak-to-average ratio (PAR) of the transmission may not exceed 13 dB. (6) Peak transmit power must be measured over any interval of continuous transmission using instrumentation calibrated in terms of an rms-equivalent voltage. The measurement results shall be properly adjusted for any instrument limitations, such as detector response times, limited resolution bandwidth capability when compared to the emission bandwidth, sensitivity, etc., so as to obtain a true peak measurement for the emission in question over the full bandwidth of the channel. (7) Fixed, mobile, and portable (hand-held) stations operating in the 2000-2020 MHz band are limited to 2 watts EIRP, except that the total power of any portion of an emission that falls within the 2000-2005 MHz band may not exceed 5 milliwatts. A licensee of AWS-4 authority may enter into private operator-to-operator agreements with all 1995-2000 MHz licensees to operate in 2000-2005 MHz at power levels above 5 milliwatts EIRP; except the total power of the AWS-4 mobile emissions may not exceed 2 watts EIRP. (8) A licensee operating a base or fixed station in the 2180-2200 MHz band utilizing a power greater than 1640 watts EIRP and greater than 1640 watts/MHz EIRP must be coordinated in advance with all AWS licensees authorized to operate on adjacent frequency blocks in the 2180-2200 MHz band. (9) Fixed, mobile and portable (hand-held) stations operating in the 1915-1920 MHz band are limited to 300 milliwatts EIRP. (10) A licensee operating a base or fixed station in the 1995-2000 MHz band utilizing a power greater than 1640 watts EIRP and greater than 1640 watts/MHz EIRP must be coordinated in advance with all PCS G Block licensees authorized to operate on adjacent frequency blocks in the 1990-1995 MHz band within 120 kilometers of the base or fixed station operating in this band. (e) The following power limits apply to the paired 1392-1395 MHz and 1432-1435 MHz bands as well as the unpaired 1390-1392 MHz band (1.4 GHz band): (1) Fixed stations transmitting in the 1390-1392 MHz and 1432-1435 MHz bands are limited to 2000 watts EIRP peak power. Fixed stations transmitting in the 1392-1395 MHz band are limited to 100 watts EIRP peak power. (2) Mobile stations transmitting in the 1390-1392 MHz and 1432-1435 MHz bands are limited to 4 watts EIRP peak power. Mobile stations transmitting in the1392-1395 MHz band are limited to 1 watt EIRP peak power. (f) The following power limits apply to the 1670-1675 MHz band: (1) Fixed and base stations are limited to 2000 watts EIRP peak power. (2) Mobile stations are limited to 4 watts EIRP peak power. (g) [Reserved] (h) The following power limits shall apply in the BRS and EBS: (1) Main, booster and base stations. (ii) If a main or booster station sectorizes or otherwise uses one or more transmitting antennas with a non-omnidirectional horizontal plane radiation pattern, the maximum EIRP in dBW in a given direction shall be determined by the following formula: EIRP = 33 dBW + 10 log(X/Y) dBW + 10 log(360/beamwidth) dBW, where X is the actual channel width in MHz, Y is either (i) 6 MHz if prior to transition or the station is in the MBS following transition or (ii) 5.5 MHz if the station is in the LBS and UBS following transition, and beamwidth is the total horizontal plane beamwidth of the individual transmitting antenna for the station or any sector measured at the half-power points. (2) Mobile and other user stations. (3) For television transmission, the peak power of the accompanying aural signal must not exceed 10 percent of the peak visual power of the transmitter. The Commission may order a reduction in aural signal power to diminish the potential for harmful interference. (4) For main, booster and response stations utilizing digital emissions with non-uniform power spectral density ( e.g. i.e. (i) Peak transmit power shall be measured over any interval of continuous transmission using instrumentation calibrated in terms of rms-equivalent voltage. The measurement results shall be properly adjusted for any instrument limitations, such as detector response times, limited resolution bandwidth capability when compared to the emission bandwidth, etc., so as to obtain a true peak measurement for the emission in question over the full bandwidth of the channel. (j) The following power requirements apply to stations transmitting in the 3700-3980 MHz band: (1) The power of each fixed or base station transmitting in the 3700-3980 MHz band and located in any county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, is limited to an equivalent isotropically radiated power (EIRP) of 3280 Watts/MHz. This limit applies to the aggregate power of all antenna elements in any given sector of a base station. (2) The power of each fixed or base station transmitting in the 3700-3980 MHz band and situated in any geographic location other than that described in paragraph (j)(1) of this section is limited to an EIRP of 1640 Watts/MHz. This limit applies to the aggregate power of all antenna elements in any given sector of a base station. (3) Mobile and portable stations are limited to 1 Watt EIRP. Mobile and portable stations operating in these bands must employ a means for limiting power to the minimum necessary for successful communications. (4) Equipment employed must be authorized in accordance with the provisions of § 27.51. Power measurements for transmissions by stations authorized under this section may be made either in accordance with a Commission-approved average power technique or in compliance with paragraph (j)(5) of this section. In measuring transmissions in this band using an average power technique, the peak-to-average ratio (PAR) of the transmission may not exceed 13 dB. (5) Peak transmit power must be measured over any interval of continuous transmission using instrumentation calibrated in terms of an rms-equivalent voltage. The measurement results shall be properly adjusted for any instrument limitations, such as detector response times, limited resolution bandwidth capability when compared to the emission bandwidth, sensitivity, and any other relevant factors, so as to obtain a true peak measurement for the emission in question over the full bandwidth of the channel. (k) The following power requirements apply to stations transmitting in the 3450-3550 MHz band: (1) The power of each fixed or base station transmitting in the 3450-3550 MHz band and located in any county with population density of 100 or fewer persons per square mile, based upon the most recently available population statistics from the Bureau of the Census, is limited to an equivalent isotropically radiated power (EIRP) of 3280 Watts/MHz. This limit applies to the aggregate power of all antenna elements in any given sector of a base station. (2) The power of each fixed or base station transmitting in the 3450-3550 MHz band and situated in any geographic location other than that described in paragraph (k)(1) of this section is limited to an EIRP of 1640 Watts/MHz. This limit applies to the aggregate power of all antenna elements in any given sector of a base station. (3) Mobile devices are limited to 1Watt (30 dBm) EIRP. Mobile devices operating in these bands must employ a means for limiting power to the minimum necessary for successful communications. (4) Equipment employed must be authorized in accordance with the provisions of § 27.51. Power measurements for transmissions by stations authorized under this section may be made either in accordance with a Commission-approved average power technique or in compliance with paragraph (k)(5) of this section. In measuring transmissions in this band using an average power technique, the peak-to-average ratio (PAR) of the transmission may not exceed 13 dB. (5) Peak transmit power must be measured over any interval of continuous transmission using instrumentation calibrated in terms of an rms-equivalent voltage. The measurement results shall be properly adjusted for any instrument limitations, such as detector response times, limited resolution bandwidth capability when compared to the emission bandwidth, sensitivity, and any other relevant factors, so as to obtain a true peak measurement for the emission in question over the full bandwidth of the channel. Table 1 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed Stations in the 757-758 and 775-776 MHz Bands and for Base and Fixed Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793 MHz Bands Transmitting a Signal With an Emission Bandwidth of 1 MHz or Less Antenna height (AAT) in Effective radiated power (ERP) Above 1372 (4500) 65 Above 1220 (4000) To 1372 (4500) 70 Above 1067 (3500) To 1220 (4000) 75 Above 915 (3000) To 1067 (3500) 100 Above 763 (2500) To 915 (3000) 140 Above 610 (2000) To 763 (2500) 200 Above 458 (1500) To 610 (2000) 350 Above 305 (1000) To 458 (1500) 600 Up to 305 (1000) 1000 Table 2 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793 MHz Bands Transmitting a Signal With an Emission Bandwidth of 1 MHz or Less Antenna height (AAT) in Effective radiated power (ERP) Above 1372 (4500) 130 Above 1220 (4000) To 1372 (4500) 140 Above 1067 (3500) To 1220 (4000) 150 Above 915 (3000) To 1067 (3500) 200 Above 763 (2500) To 915 (3000) 280 Above 610 (2000) To 763 (2500) 400 Above 458 (1500) To 610 (2000) 700 Above 305 (1000) To 458 (1500) 1200 Up to 305 (1000) 2000 Table 3 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793 MHz Bands Transmitting a Signal With an Emission Bandwidth Greater than 1 MHz Antenna height (AAT) in Effective radiated power (ERP) per MHz Above 1372 (4500) 65 Above 1220 (4000) To 1372 (4500) 70 Above 1067 (3500) To 1220 (4000) 75 Above 915 (3000) To 1067 (3500) 100 Above 763 (2500) To 915 (3000) 140 Above 610 (2000) To 763 (2500) 200 Above 458 (1500) To 610 (2000) 350 Above 305 (1000) To 458 (1500) 600 Up to 305 (1000) 1000 Table 4 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793 MHz Bands Transmitting a Signal With an Emission Bandwidth Greater than 1 MHz Antenna height (AAT) in Effective radiated power (ERP) per MHz Above 1372 (4500) 130 Above 1220 (4000) To 1372 (4500) 140 Above 1067 (3500) To 1220 (4000) 150 Above 915 (3000) To 1067 (3500) 200 Above 763 (2500) To 915 (3000) 280 Above 610 (2000) To 763 (2500) 400 Above 458 (1500) To 610 (2000) 700 Above 305 (1000) To 458 (1500) 1200 Up to 305 (1000) 2000 [62 FR 16497, Apr. 7, 1997] Editorial Note: For Federal Register www.govinfo.gov. § 27.51 Equipment authorization. (a) Each transmitter utilized for operation under this part must be of a type that has been authorized by the Commission under its certification procedure. (b) Any manufacturer of radio transmitting equipment to be used in these services may request equipment authorization following the procedures set forth in subpart J of part 2 of this chapter. Equipment authorization for an individual transmitter may be requested by an applicant for a station authorization by following the procedures set forth in part 2 of this chapter. [65 FR 3147, Jan. 20, 2000] § 27.52 [Reserved] § 27.53 Emission limits. Link to an amendment published at 91 FR 48743, July 31, 2026. (a) For operations in the 2305-2320 MHz band and the 2345-2360 MHz band, the power of any emission outside a licensee's frequency band(s) of operation shall be attenuated below the transmitter power P (with averaging performed only during periods of transmission) within the licensed band(s) of operation, in watts, by the following amounts: (1) For base and fixed stations' operations in the 2305-2320 MHz band and the 2345-2360 MHz band: (i) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2305 and 2320 MHz and on all frequencies between 2345 and 2360 MHz that are outside the licensed band(s) of operation, and not less than 75 + 10 log (P) dB on all frequencies between 2320 and 2345 MHz; (ii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2300 and 2305 MHz, 70 + 10 log (P) dB on all frequencies between 2287.5 and 2300 MHz, 72 + 10 log (P) dB on all frequencies between 2285 and 2287.5 MHz, and 75 + 10 log (P) dB below 2285 MHz; (iii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2360 and 2362.5 MHz, 55 + 10 log (P) dB on all frequencies between 2362.5 and 2365 MHz, 70 + 10 log (P) dB on all frequencies between 2365 and 2367.5 MHz, 72 + 10 log (P) dB on all frequencies between 2367.5 and 2370 MHz, and 75 + 10 log (P) dB above 2370 MHz. (2) For fixed customer premises equipment (CPE) stations operating in the 2305-2320 MHz band and the 2345-2360 MHz band transmitting with more than 2 watts per 5 megahertz average EIRP: (i) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2305 and 2320 MHz and on all frequencies between 2345 and 2360 MHz that are outside the licensed band(s) of operation, and not less than 75 + 10 log (P) dB on all frequencies between 2320 and 2345 MHz; (ii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2300 and 2305 MHz, 70 + 10 log (P) dB on all frequencies between 2287.5 and 2300 MHz, 72 + 10 log (P) dB on all frequencies between 2285 and 2287.5 MHz, and 75 + 10 log (P) dB below 2285 MHz; (iii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2360 and 2362.5 MHz, 55 + 10 log (P) dB on all frequencies between 2362.5 and 2365 MHz, 70 + 10 log (P) dB on all frequencies between 2365 and 2367.5 MHz, 72 + 10 log (P) dB on all frequencies between 2367.5 and 2370 MHz, and 75 + 10 log (P) dB above 2370 MHz. (3) For fixed CPE stations operating in the 2305-2320 MHz and 2345-2360 MHz bands transmitting with 2 watts per 5 megahertz average EIRP or less: (i) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2305 and 2320 MHz and on all frequencies between 2345 and 2360 MHz that are outside the licensed band(s) of operation, not less than 55 + 10 log (P) dB on all frequencies between 2320 and 2324 MHz and between 2341 and 2345 MHz, not less than 61 + 10 log (P) dB on all frequencies between 2324 and 2328 MHz and between 2337 and 2341 MHz, and not less than 67 + 10 log (P) dB on all frequencies between 2328 and 2337 MHz; (ii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2300 and 2305 MHz, 55 + 10 log (P) dB on all frequencies between 2296 and 2300 MHz, 61 + 10 log (P) dB on all frequencies between 2292 and 2296 MHz, 67 + 10 log (P) dB on all frequencies between 2288 and 2292 MHz, and 70 + 10 log (P) dB below 2288 MHz; (iii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2360 and 2365 MHz, and not less than 70 + 10 log (P) dB above 2365 MHz. (4) For mobile and portable stations operating in the 2305-2315 MHz and 2350-2360 MHz bands: (i) By a factor of not less than: 43 + 10 log (P) dB on all frequencies between 2305 and 2320 MHz and on all frequencies between 2345 and 2360 MHz that are outside the licensed band(s) of operation, not less than 55 + 10 log (P) dB on all frequencies between 2320 and 2324 MHz and on all frequencies between 2341 and 2345 MHz, not less than 61 + 10 log (P) dB on all frequencies between 2324 and 2328 MHz and on all frequencies between 2337 and 2341 MHz, and not less than 67 + 10 log (P) dB on all frequencies between 2328 and 2337 MHz; (ii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2300 and 2305 MHz, 55 + 10 log (P) dB on all frequencies between 2296 and 2300 MHz, 61 + 10 log (P) dB on all frequencies between 2292 and 2296 MHz, 67 + 10 log (P) dB on all frequencies between 2288 and 2292 MHz, and 70 + 10 log (P) dB below 2288 MHz; (iii) By a factor of not less than 43 + 10 log (P) dB on all frequencies between 2360 and 2365 MHz, and not less than 70 + 10 log (P) dB above 2365 MHz. (5) Measurement procedure. i.e., (6) [Reserved] (7) The measurements of emission power can be expressed in peak or average values, provided they are expressed in the same parameters as the transmitter power; (8) Waiver requests of any of the out-of-band emission limits in paragraphs (a)(1) through (a)(7) of this section shall be entertained only if interference protection equivalent to that afforded by the limits is shown; (9) [Reserved] (10) The out-of-band emissions limits in paragraphs (a)(1) through (a)(3) of this section may be modified by the private contractual agreement of all affected licensees, who must maintain a copy of the agreement in their station files and disclose it to prospective assignees, transferees, or spectrum lessees and, upon request, to the Commission. (b) For WCS Satellite DARS operations: 2 (c) For operations in the 746-758 MHz band and the 776-788 MHz band, the power of any emission outside the licensee's frequency band(s) of operation shall be attenuated below the transmitter power (P) within the licensed band(s) of operation, measured in watts, in accordance with the following: (1) On any frequency outside the 746-758 MHz band, the power of any emission shall be attenuated outside the band below the transmitter power (P) by at least 43 + 10 log (P) dB; (2) On any frequency outside the 776-788 MHz band, the power of any emission shall be attenuated outside the band below the transmitter power (P) by at least 43 + 10 log (P) dB; (3) On all frequencies between 763-775 MHz and 793-805 MHz, by a factor not less than 76 + 10 log (P) dB in a 6.25 kHz band segment, for base and fixed stations; (4) On all frequencies between 763-775 MHz and 793-805 MHz, by a factor not less than 65 + 10 log (P) dB in a 6.25 kHz band segment, for mobile and portable stations; (5) Compliance with the provisions of paragraphs (c)(1) and (c)(2) of this section is based on the use of measurement instrumentation employing a resolution bandwidth of 100 kHz or greater. However, in the 100 kHz bands immediately outside and adjacent to the frequency block, a resolution bandwidth of at least 30 kHz may be employed; (6) Compliance with the provisions of paragraphs (c)(3) and (c)(4) of this section is based on the use of measurement instrumentation such that the reading taken with any resolution bandwidth setting should be adjusted to indicate spectral energy in a 6.25 kHz segment. (d) [Reserved] (e) For operations in the 775-776 MHz and 805-806 MHz bands, transmitters must comply with either paragraphs (d)(1) through (5) of this section or the ACP emission limitations set forth in paragraphs (d)(6) to (d)(9) of this section. (1) On all frequencies between 758-775 MHz and 788-805 MHz, the power of any emission outside the licensee's frequency bands of operation shall be attenuated below the transmitter power (P) within the licensed band(s) of operation, measured in watts, by a factor not less than 76 + 10 log (P) dB in a 6.25 kHz band segment, for base and fixed stations; (2) On all frequencies between 758-775 MHz and 788-805 MHz, the power of any emission outside the licensee's frequency bands of operation shall be attenuated below the transmitter power (P) within the licensed band(s) of operation, measured in watts, by a factor not less than 65 + 10 log (P) dB in a 6.25 kHz band segment, for mobile and portable stations; (3) On any frequency outside the 775-776 MHz and 805-806 MHz bands, the power of any emission shall be attenuated outside the band below the transmitter power (P) within the licensed band(s) of operation, measured in watts, by at least 43 + 10 log (P) dB; (4) Compliance with the provisions of paragraphs (e)(1) and (e)(2) of this section is based on the use of measurement instrumentation such that the reading taken with any resolution bandwidth setting should be adjusted to indicate spectral energy in a 6.25 kHz segment; (5) Compliance with the provisions of paragraph (e)(3) of this section is based on the use of measurement instrumentation employing a resolution bandwidth of 100 kHz or greater. However, in the 100 kHz bands immediately outside and adjacent to the frequency block, a resolution bandwidth of at least 30 kHz may be employed. (6) The adjacent channel power (ACP) requirements for transmitters designed for various channel sizes are shown in the following tables. Mobile station requirements apply to handheld, car mounted and control station units. The tables specify a value for the ACP as a function of the displacement from the channel center frequency and measurement bandwidth. In the following tables, “(s)” indicates a swept measurement may be used. 6.25 kHz Mobile Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP 6.25 6.25 −40 12.5 6.25 −60 18.75 6.25 −60 25.00 6.25 −65 37.50 25.00 −65 62.50 25.00 −65 87.50 25.00 −65 150.00 100.00 −65 250.00 100.00 −65 350.00 100.00 −65 >400 kHz to 12 MHz 30(s) −75 12 MHz to paired receive band 30(s) −75 In the paired receive band 30(s) −100 12.5 kHz Mobile Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP 9.375 6.25 −40 15.625 6.25 −60 21.875 6.25 −60 37.50 25.00 −60 62.50 25.00 −65 87.50 25.00 −65 150.00 100 −65 250.00 100 −65 350.00 100 −65 >400 to 12 MHz 30(s) −75 12 MHz to paired receive band 30(s) −75 In the paired receive band 30(s) −100 25 kHz Mobile Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP 15.625 6.25 −40 21.875 6.25 −60 37.50 25 −60 62.50 25 −65 87.50 25 −65 150.00 100 −65 250.00 100 −65 350.00 100 −65 >400 kHz to 12 MHz 30(s) −75 12 MHz to paired receive band 30(s) −75 In the paired receive band 30(s) −100 150 kHz Mobile Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP relative (dBc) 100 50 −40 200 50 −50 300 50 −50 400 50 −50 600-1000 30(s) −60 1000 to receive band 30(s) −70 In the receive band 30(s) −100 6.25 kHz Base Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP 6.25 6.25 −40 12.50 6.25 −60 18.75 6.25 −60 25.00 6.25 −65 37.50 25 −65 62.50 25 −65 87.50 25 −65 150.00 100 −65 250.00 100 −65 350.00 100 −65 >400 kHz to 12 MHz 30(s) −80 12 MHz to paired receive band 30(s) −80 In the paired receive band 30(s) 1 1 12.5 kHz Base Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP 9.375 6.25 −40 15.625 6.25 −60 21.875 6.25 −60 37.5 25 −60 62.5 25 −65 87.5 25 −65 150 100 −65 250 100 −65 350.00 100 −65 >400 kHz to 12 MHz 30(s) −80 12 MHz to paired receive band 30(s) −80 In the paired receive band 30(s) 1 1 25 kHz Base Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP 15.625 6.25 −40 21.875 6.25 −60 37.5 25 −60 62.5 25 −65 87.5 25 −65 150 100 −65 250 100 −65 350 100.00 −65 >400 kHz to 12 MHz 30(s) −80 12 MHz to paired receive band 30(s) −80 In the paired receive band 30(s) 1 1 150 kHz Base Transmitter ACP Requirements Offset from center Measurement bandwidth Maximum ACP 100 50 −40 200 50 −50 300 50 −55 400 50 −60 600-1000 30(s) −65 1000 to receive band 30(s) −75 (continues at −6dB/oct In the receive band 30(s) 1 1 (7) ACP measurement procedure. e.g., (i) Setting reference level. (ii) Non-swept power measurement. (iii) Swept power measurement. (8) Out-of-band emission limit. (9) Authorized bandwidth. (f) For operations in the 746-758 MHz, 775-788 MHz, and 805-806 MHz bands, emissions in the band 1559-1610 MHz shall be limited to −70 dBW/MHz equivalent isotropically radiated power (EIRP) for wideband signals, and −80 dBW EIRP for discrete emissions of less than 700 Hz bandwidth. For the purpose of equipment authorization, a transmitter shall be tested with an antenna that is representative of the type that will be used with the equipment in normal operation. (g) For operations in the 600 MHz band and the 698-746 MHz band, the power of any emission outside a licensee's frequency band(s) of operation shall be attenuated below the transmitter power (P) within the licensed band(s) of operation, measured in watts, by at least 43 + 10 log (P) dB. Compliance with this provision is based on the use of measurement instrumentation employing a resolution bandwidth of 100 kilohertz or greater. However, in the 100 kilohertz bands immediately outside and adjacent to a licensee's frequency block, a resolution bandwidth of at least 30 kHz may be employed. (h) AWS emission limits General protection levels. 10 (2) Additional protection levels. (i) Operations in the 2180-2200 MHz band are subject to the out-of-band emission requirements set forth in § 27.1134 for the protection of federal government operations operating in the 2200-2290 MHz band. (ii) For operations in the 2000-2020 MHz band, the power of any emissions below 2000 MHz shall be attenuated below the transmitter power (P) in watts by at least 70 + 10 log 10 (iii) For operations in the 1915-1920 MHz band, the power of any emission between 1930-1995 MHz shall be attenuated below the transmitter power (P) in watts by at least 70 + 10 log 10 (iv) For operations in the 1995-2000 MHz band, the power of any emission between 2005-2020 MHz shall be attenuated below the transmitter power (P) in watts by at least 70 + 10 log 10 (3) Measurement procedure. (ii) When measuring the emission limits, the nominal carrier frequency shall be adjusted as close to the licensee's frequency block edges, both upper and lower, as the design permits. (iii) The measurements of emission power can be expressed in peak or average values, provided they are expressed in the same parameters as the transmitter power. (4) Private agreements. (ii) For AWS operations in the 2000-2020 MHz band, a licensee may enter into private agreements with all licensees operating between 1995 and 2000 MHz to allow the 70 + 10 log 10 (iii) An AWS licensee who is a party to a private agreement described in this section (4) must maintain a copy of the agreement in its station files and disclose it, upon request, to prospective AWS assignees, transferees, or spectrum lessees and to the Commission. (i) When an emission outside of the authorized bandwidth causes harmful interference, the Commission may, at its discretion, require greater attenuation than specified in this section. (j)(1) For operations in the unpaired 1390-1392 MHz band and the paired 1392-1395 MHz and 1432-1435 MHz bands, the power of any emission outside the licensee's frequency band(s) of operation shall be attenuated below the transmitter power (P) by at least 43 + 10 log (P) dB. Compliance with these provisions is based on the procedures described in paragraph (a)(5) of this section. (2) In the 1390-1395 MHz and 1432-1435 MHz bands, licensees are encouraged to take all reasonable steps to ensure that unwanted emission power does not exceed the following levels in the band 1400-1427 MHz: (i) For stations of point-to-point systems in the fixed service: −45 dBW/27 MHz. (ii) For stations in the mobile service: −60 dBW/27 MHz. (k) For operations in the 1670-1675 MHz, the power of any emission outside the licensee's frequency band(s) of operation shall be attenuated below the transmitter power (P) by at least 43 + 10 log (P) dB. Compliance with these provisions is based on the procedures described in paragraph (a)(5) of this section. (l) 3.7 GHz Service. (1) For base station operations in the 3700-3980 MHz band, the conducted power of any emission outside the licensee's authorized bandwidth shall not exceed −13 dBm/MHz. Compliance with this paragraph (l)(1) is based on the use of measurement instrumentation employing a resolution bandwidth of 1 megahertz or greater. However, in the 1 megahertz bands immediately outside and adjacent to the licensee's frequency block, a resolution bandwidth of at least one percent of the emission bandwidth of the fundamental emission of the transmitter may be employed. The emission bandwidth is defined as the width of the signal between two points, one below the carrier center frequency and one above the carrier center frequency, outside of which all emissions are attenuated at least 26 dB below the transmitter power. (2) For mobile operations in the 3700-3980 MHz band, the conducted power of any emission outside the licensee's authorized bandwidth shall not exceed −13 dBm/MHz. Compliance with this paragraph (l)(2) is based on the use of measurement instrumentation employing a resolution bandwidth of 1 megahertz or greater. However, in the 1 megahertz bands immediately outside and adjacent to the licensee's frequency block, the minimum resolution bandwidth for the measurement shall be either one percent of the emission bandwidth of the fundamental emission of the transmitter or 350 kHz. In the bands between 1 and 5 MHz removed from the licensee's frequency block, the minimum resolution bandwidth for the measurement shall be 500 kHz. The emission bandwidth is defined as the width of the signal between two points, one below the carrier center frequency and one above the carrier center frequency, outside of which all emissions are attenuated at least 26 dB below the transmitter power. (m) For BRS and EBS stations, the power of any emissions outside the licensee's frequency bands of operation shall be attenuated below the transmitter power (P) measured in watts in accordance with the standards below. If a licensee has multiple contiguous channels, out-of-band emissions shall be measured from the upper and lower edges of the contiguous channels. (1) Prior to the transition, and thereafter, solely within the MBS, for analog operations with an EIRP in excess of −9 dBW, the signal shall be attenuated at the channel edges by at least 38 dB relative to the peak visual carrier, then linearly sloping from that level to at least 60 dB of attenuation at 1 MHz below the lower band edge and 0.5 MHz above the upper band edge, and attenuated at least 60 dB at all other frequencies. (2) For digital base stations, the attenuation shall be not less than 43 + 10 log (P) dB, unless a documented interference complaint is received from an adjacent channel licensee with an overlapping Geographic Service Area. Mobile Satellite Service licensees operating on frequencies below 2495 MHz may also submit a documented interference complaint against BRS licensees operating on channel BRS No. 1 on the same terms and conditions as adjacent channel BRS or EBS licensees. Provided that a documented interference complaint cannot be mutually resolved between the parties prior to the applicable deadline, then the following additional attenuation requirements shall apply: (i) If a pre-existing base station suffers harmful interference from emissions caused by a new or modified base station located 1.5 km or more away, within 24 hours of the receipt of a documented interference complaint the licensee of the new or modified base station must attenuate its emissions by at least 67 + 10 log (P) dB measured at 3 megahertz, above or below, from the channel edge of its frequency block and shall immediately notify the complaining licensee upon implementation of the additional attenuation. No later than 60 days after the implementation of such additional attenuation, the licensee of the complaining base station must attenuate its base station emissions by at least 67 + 10 log (P) dB measured at 3 megahertz, above or below, from the channel edge of its frequency block of the new or modified base station. (ii) If a pre-existing base station suffers harmful interference from emissions caused by a new or modified base station located less than 1.5 km away, within 24 hours of receipt of a documented interference complaint the licensee of the new or modified base station must attenuate its emissions by at least 67 + 10 log (P)−20 log (Dkm/1.5) dB measured at 3 megahertz, above or below, from the channel edge of its frequency block of the complaining licensee, or if both base stations are co-located, limit its undesired signal level at the pre-existing base station receiver(s) to no more than −107 dBm measured in a 5.5 megahertz bandwidth and shall immediately notify the complaining licensee upon such reduction in the undesired signal level. No later than 60 days after such reduction in the undesired signal level, the complaining licensee must attenuate its base station emissions by at least 67 + 10 log (P) dB measured at 3 megahertz, above or below, from the channel edge of its frequency block of the new or modified base station. (iii) If a new or modified base station suffers harmful interference from emissions caused by a pre-existing base station located 1.5 km or more away, within 60 days of receipt of a documented interference complaint the licensee of each base station must attenuate its base station emissions by at least 67 + 10 log (P) dB measured at 3 megahertz, above or below, from the channel edge of its frequency block of the other licensee. (iv) If a new or modified base station suffers harmful interference from emissions caused by a pre-existing base station located less than 1.5 km away, within 60 days of receipt of a documented interference complaint: (a) The licensee of the new or modified base station must attenuate its OOBE by at least 67 + 10 log (P)−20 log (Dkm/1.5) measured 3 megahertz above or below, from the channel edge of its frequency block of the other licensee, or if the base stations are co-located, limit its undesired signal level at the other base station receiver(s) to no more than −107 dBm measured in a 5.5-megahertz bandwidth; and (b) the licensee causing the interference must attenuate its emissions by at least 67 + 10 log (P) dB measured at 3 megahertz, above or below, from the channel edge of its frequency block of the new or modified base station. (v) For all fixed digital user stations, the attenuation factor shall be not less than 43 + 10 log (P) dB at the channel edge. (3) Prior to transition and thereafter solely within the MBS, and notwithstanding paragraph (l)(2) of this section, the maximum out-of-band power of a digital transmitter operating on a single 6 MHz channel with an EIRP in excess of −9 dBW employing digital modulation for the primary purpose of transmitting video programming shall be attenuated at the 6 MHz channel edges at least 25 dB relative to the licensed average 6 MHz channel power level, then attenuated along a linear slope to at least 40 dB at 250 kHz beyond the nearest channel edge, then attenuated along a linear slope from that level to at least 60 dB at 3 MHz above the upper and below the lower licensed channel edges, and attenuated at least 60 dB at all other frequencies. (4) For mobile digital stations, the attenuation factor shall be not less than 40 + 10 log (P) dB on all frequencies between the channel edge and 5 megahertz from the channel edge, 43 + 10 log (P) dB on all frequencies between 5 megahertz and X megahertz from the channel edge, and 55 + 10 log (P) dB on all frequencies more than X megahertz from the channel edge, where X is the greater of 6 megahertz or the actual emission bandwidth as defined in paragraph (m)(6) of this section. In addition, the attenuation factor shall not be less that 43 + 10 log (P) dB on all frequencies between 2490.5 MHz and 2496 MHz and 55 + 10 log (P) dB at or below 2490.5 MHz. Mobile Satellite Service licensees operating on frequencies below 2495 MHz may also submit a documented interference complaint against BRS licensees operating on channel BRS Channel 1 on the same terms and conditions as adjacent channel BRS or EBS licensees. (5) [Reserved] (6) Measurement procedure. (7) Alternative out of band emission limit. (n) 3.45 GHz Service. (1) For base station operations in the 3450-3550 MHz band, the conducted power of any emission outside the licensee's authorized bandwidth shall not exceed −13 dBm/MHz. Compliance with the provisions of this paragraph (n)(1) is based on the use of measurement instrumentation employing a resolution bandwidth of 1 megahertz or greater. However, in the 1 megahertz bands immediately outside and adjacent to the licensee's frequency block, a resolution bandwidth of at least one percent of the emission bandwidth of the fundamental emission of the transmitter may be employed, but limited to a maximum of 200 kHz. The emission bandwidth is defined as the width of the signal between two points, one below the carrier center frequency and one above the carrier center frequency, outside of which all emissions are attenuated at least 26 dB below the transmitter power. Notwithstanding the channel edge requirement of −13 dBm per megahertz, for base station operations in the 3450-3550 MHz band, the conducted power of any emission below 3440 MHz or above 3560 MHz shall not exceed −25 dBm/MHz, and the conducted power of emissions below 3430 MHz or above 3570 MHz shall not exceed −40 dBm/MHz. (2) For mobile operations in the 3450-3550 MHz band, the conducted power of any emission outside the licensee's authorized bandwidth shall not exceed −13 dBm/MHz. Compliance with this paragraph (n)(2) is based on the use of measurement instrumentation employing a resolution bandwidth of 1 megahertz or greater. However, in the 1 megahertz bands immediately outside and adjacent to the licensee's frequency block, a resolution bandwidth of at least one percent of the emission bandwidth of the fundamental emission of the transmitter may be employed, but limited to a maximum of 200 kHz. In the bands between 1 and 5 MHz removed from the licensee's frequency block, the minimum resolution bandwidth for the measurement shall be 500 kHz. The emission bandwidth is defined as the width of the signal between two points, one below the carrier center frequency and one above the carrier center frequency, outside of which all emissions are attenuated at least 26 dB below the transmitter power. (o) When an emission outside of the authorized bandwidth causes harmful interference, the Commission may, at its discretion, require greater attenuation than specified in this section. [62 FR 16497, Apr. 7, 1997] Editorial Note: For Federal Register www.govinfo.gov. § 27.54 [Reserved] § 27.55 Power strength limits. Link to an amendment published at 91 FR 48743, July 31, 2026. (a) Field strength limits. (1) 1995-2000 MHz, 2110-2155, 2155-2180, 2180-2200, 2305-2320, and 2345-2360 MHz bands: 47 dBµV/m. (2) 600 MHz, 698-758, and 775-787 MHz bands: 40 dBµV/m. (3) The paired 1392-1395 MHz and 1432-1435 MHz bands and the unpaired 1390-1392 MHz band (1.4 GHz band): 47 dBµV/m. (4) BRS and EBS: The predicted or measured median field strength at any location on the geographical border of a licensee's service area shall not exceed the value specified unless the adjacent affected service area licensee(s) agree(s) to a different field strength. This value applies to both the initially offered services areas and to partitioned services areas. Licensees may exceed this signal level where there is no affected licensee that is constructed and providing service. Once the affected licensee is providing service, the original licensee will be required to take whatever steps necessary to comply with the applicable power level at its GSA boundary, absent consent from the affected licensee. (i) [Reserved] (ii) Following transition, for stations in the LBS and UBS, the signal strength at any point along the licensee's GSA boundary must not exceed 47 dBµV/m. This field strength is to be measured at 1.5 meters above the ground over the channel bandwidth ( i.e. (iii) Following transition, for stations in the MBS, the signal strength at any point along the licensee's GSA boundary must not exceed the greater of −73.0 + 10 log(X/6) dBW/m 2 (b) Power flux density limit for stations operating in the 698-746 MHz bands. (c) Power flux density limit for stations operating in the 746-757 MHz and 776-787 MHz bands. (d) Power flux density for stations operating in the 3700-3980 MHz band. 2 (e) Power flux density for stations operating in the 3450-3550 MHz band. 2 [69 FR 5715, Feb. 6, 2004, as amended at 69 FR 72034, Dec. 10, 2004; 72 FR 27712, May 16, 2007; 72 FR 48852, Aug. 24, 2007; 73 FR 26040, May 8, 2008; 78 FR 8270, Feb. 5, 2013; 78 FR 50256, Aug. 16, 2013; 79 FR 599, Jan. 6, 2014; 79 FR 32413, June 4, 2014; 79 FR 48539, Aug. 15, 2014; 85 FR 22882, Apr. 23, 2020; 86 FR 17954, Apr. 7, 2021; 90 FR 57705, Dec. 12, 2025] § 27.56 Antenna structures; air navigation safety. A licensee that owns its antenna structure(s) must not allow such antenna structure(s) to become a hazard to air navigation. In general, antenna structure owners are responsible for registering antenna structures with the FCC if required by part 17 of this chapter, and for installing and maintaining any required marking and lighting. However, in the event of default of this responsibility by an antenna structure owner, the FCC permittee or licensee authorized to use an affected antenna structure will be held responsible by the FCC for ensuring that the antenna structure continues to meet the requirements of part 17 of this chapter. See § 17.6 of this chapter. (a) Marking and lighting. (b) Maintenance contracts. § 27.57 International coordination. Link to an amendment published at 91 FR 48743, July 31, 2026. (a) WCS operations in the border areas shall be subject to coordination with those countries and provide protection to non-U.S. operations in the 2305-2320 and 2345-2360 MHz bands as appropriate. In addition, satellite DARS operations in WCS spectrum shall be subject to international satellite coordination procedures. (b) Wireless operations in the 512-608 MHz, 614-763 MHz, 775-793 MHz, and 805-806 MHz bands are subject to current and future international agreements between the United States and Canada and the United States and Mexico. Unless otherwise modified by international treaty, licenses must not cause interference to, and must accept harmful interference from, television broadcast operations in Mexico and Canada, where these services are co-primary in the band. (c) Operation in the 1695-1710 MHz, 1710-1755 MHz, 1755-1780 MHz, 1915-1920 MHz, 1995-2000 MHz, 2000-2020 MHz, 2110-2155 MHz, 2155-2180 MHz, 2180-2200 MHz, 3450-3550 MHz, and 3700-3980 MHz bands is subject to international agreements with Mexico and Canada. [62 FR 9658, Mar. 3, 1997, as amended at 67 FR 5511, Feb. 6, 2002; 69 FR 5715, Feb. 6, 2004; 72 FR 48852, Aug. 24, 2007; 79 FR 599, Jan. 6, 2014; 79 FR 32413, June 4, 2014; 79 FR 48539, Aug. 15, 2014; 86 FR 17954, Apr. 7, 2021] §§ 27.58-27.62 [Reserved] § 27.64 Protection from interference. Wireless Communications Service (WCS) stations operating in full accordance with applicable FCC rules and the terms and conditions of their authorizations are normally considered to be non-interfering. If the FCC determines, however, that interference which significantly interrupts or degrades a radio service is being caused, it may, after notice and an opportunity for a hearing, require modifications to any WCS station as necessary to eliminate such interference. (a) Failure to operate as authorized. (b) Intermodulation interference. (c) Situations in which no protection is afforded. (1) Interference to base receivers from base or fixed transmitters. (2) Interference to mobile receivers from mobile transmitters. (3) Interference to base receivers from mobile transmitters. (4) Interference to fixed stations. (5) Anomalous or infrequent propagation modes. (d) Harmful interference to SDARS operations requiring resolution. (1) A WCS ground signal level greater than −44 dBm in the upper or lower A or B block, or −55 dBm in the C or D block, present at a location on a roadway, where a test demonstrates that SDARS service would be muted over a road distance of greater than 50 meters; or (2) A WCS ground signal level exceeding −44 dBm in the upper or lower A or B block, or −55 dBm in the C or D block on a test drive route, which is mutually agreed upon by the WCS licensee and the SDARS licensee, for more than 1 percent of the cumulative surface road distance on that drive route, where a test demonstrates that SDARS service would be muted over a cumulative road distance of greater than 0.5 percent (incremental to any muting present prior to use of WCS frequencies in the area of that drive test). [62 FR 9658, Mar. 3, 1997, as amended at 78 FR 9621, Feb. 11, 2013] § 27.65 Acceptance of interference in 2000-2020 MHz. (a) Receivers operating in the 2000-2020 MHz band must accept interference from lawful operations in the 1995-2000 MHz band, where such interference is due to: (1) The in-band power of any operations in 1995-2000 MHz (i.e., the portion transmit power contained in the 1995-2000 MHz band); or (2) The portion of out-of-band emissions contained in 2000-2005 MHz. (b) [Reserved] [78 FR 8270, Feb. 5, 2013] § 27.66 Discontinuance, reduction, or impairment of service. (a) Involuntary act. (b) Voluntary act by common carrier. (c) Voluntary act by non-common carrier. (d) Notifications and requests. [65 FR 3149, Jan. 20, 2000; 65 FR 12483, Mar. 9, 2000, as amended at 65 FR 17605, Apr. 4, 2000; 65 FR 57267, Sept. 21, 2000] § 27.70 Information exchange. (a) Prior notification. (1) Location; (2) Effective radiated power; (3) Antenna height; and (4) Channels available for use. (b) Purpose of prior notification. (1) Allow a public safety licensee to advise the 746-757 or 776-787 MHz band licensee whether it believes a proposed base or fixed station will generate unacceptable interference; (2) Permit 746-757 and 776-787 MHz band licensees to make voluntary changes in base or fixed station parameters when a public safety licensee alerts them to possible interference; and, (3) Rapidly identify the source if interference is encountered when the base or fixed station is activated. [72 FR 27712, May 16, 2007, as amended at 72 FR 48853, Aug. 24, 2007; 79 FR 599, Jan. 6, 2014] § 27.72 Information sharing requirements. This section requires WCS licensees in the 2305-2320 MHz and 2345-2360 MHz bands to share information regarding the location and operation of base and fixed stations (except fixed customer premises equipment) with Satellite Digital Audio Radio Service (SDARS) licensees in the 2320-2345 MHz band. Section 25.263 of this chapter requires SDARS licensees in the 2320-2345 MHz band to share information regarding the location and operation of terrestrial repeaters with WCS licensees in the 2305-2320 MHz and 2345-2360 MHz bands. WCS licensees are encouraged to develop separate coordination agreements with SDARS licensees to facilitate efficient deployment of and coexistence between each service. To the extent the provisions of any such coordination agreement conflict with the requirements set forth herein, the procedures established under a coordination agreement will control. WCS licensees must maintain a copy of any coordination agreement with an SDARS licensee in their station files and disclose it to prospective assignees, transferees, or spectrum lessees and, upon request, to the Commission. (a) Sites and frequency selections. (b) Prior notice periods. (1) For modifications other than changes in location, a licensee may provide notice within 24 hours after the modified operation if the modification does not result in a predicted increase of the power flux density (PFD) at ground level by more than 1 dB since the last advance notice was given. If a demonstration is made by the SDARS licensee that such modifications may cause harmful interference to SDARS receivers, WCS licensees will be required to provide notice 5 business days in advance of additional station modifications. (2) WCS base and fixed stations operating below 2 watts equivalent isotropically radiated power (EIRP) are exempt from the notice requirements set forth in this paragraph. (3) WCS and SDARS licensees may enter into agreements regarding alternative notification procedures. (c) Contents of notice. e.g., (2) Regardless of the notification method, it must specify relevant technical details, including, at a minimum: (i) The coordinates of the proposed base or fixed stations to an accuracy of no less than ±1 second latitude and longitude; (ii) The proposed operating power(s), frequency band(s), and emission(s); (iii) The antenna center height above ground and ground elevation above mean sea level, both to an accuracy of no less than ±1 meter; (iv) The antenna gain pattern(s) in the azimuth and elevation planes that include the peak of the main beam; and (v) The antenna downtilt angle(s). (3) A WCS licensee operating base or fixed stations must maintain an accurate and up-to-date inventory of its stations, including the information set forth in § 27.72(c)(2), which shall be available upon request by the Commission. (d) Calculation of notice period. (e) Duty to cooperate. [75 FR 45071, Aug. 2, 2010, as amended at 78 FR 9622, Feb. 11, 2013; 88 FR 21442, Apr. 10, 2023] § 27.73 WCS, AMT, and Goldstone coordination requirements. This section requires Wireless Communications Services (WCS) licensees in the 2305-2320 MHz and 2345-2360 MHz bands, respectively, to coordinate the deployment of base and fixed stations (except fixed customer premises equipment) with the Goldstone, CA Deep Space Network (DSN) facility in the 2290-2300 MHz band and with Aeronautical Mobile Telemetry (AMT) facilities in the 2360-2395 MHz band; and to take all practicable steps necessary to minimize the risk of harmful interference to AMT and DSN facilities. (a) WCS licensees operating base and fixed stations in the 2345-2360 MHz band must, prior to operation of such stations, achieve a mutually satisfactory coordination agreement with the AMT entity(ies) ( i.e., www.archives.gov/federal-register/cfr/ibr-locations.html [email protected] www.itu.int/en/publications/Pages/default.aspx (b) WCS licensees operating base and fixed stations in the 2305-2320 MHz band must, prior to operation of such stations, achieve a mutually satisfactory coordination agreement with the National Aeronautics and Space Administration (NASA) within 145 kilometers of the Goldstone, CA earth station site (35°25′33″ N, 116°53′23″ W). (c) After base or fixed station operations commence, upon receipt of a complaint of harmful interference, the WCS licensee(s) receiving the complaint, no matter the distance from the NASA Goldstone, CA earth station or from an AMT site, operating in the 2305-2320 or 2345-2360 MHz bands, respectively, shall take all practicable steps to immediately eliminate the interference. (d) Duty to cooperate. [75 FR 45072, Aug. 2, 2010, as amended at 78 FR 9622, Feb. 11, 2013; 85 FR 64407, Oct. 13, 2020; 88 FR 21442, Apr. 10, 2023] § 27.75 Basic interoperability requirement. Link to an amendment published at 91 FR 48743, July 31, 2026. (a)(1) Mobile and portable stations that operate on any portion of frequencies in the paired 1755-1780 MHz and 2155-2180 MHz band must be capable of operating on all frequencies in the paired 1710-1780 MHz and 2110-2180 MHz band, using the same air interfaces that the equipment utilizes on any frequencies in the paired 1710-1780 MHz and 2110-2180 MHz band. (2) Mobile and portable stations that operate on any portion of frequencies in the 600 MHz band must be capable of operating on all frequencies in the 600 MHz band using the same air interfaces that the equipment utilizes on any frequencies in the 600 MHz band. (3) Mobile and portable stations that operate on any portion of frequencies in the 3700-3980 MHz band must be capable of operating on all frequencies in the 3700-3980 MHz band using the same air interfaces that the equipment utilizes on any frequencies in the 3700-3980 MHz band. (4) Mobile and portable stations that operate on any portion of frequencies in the 3450-3550 MHz band must be capable of operating on all frequencies in the 3450-3550 MHz band using the same air interfaces that the equipment utilizes on any frequencies in the 3450-3550 MHz band. (b) The basic interoperability requirement in paragraph (a) of this section does not require a licensee to use any particular industry standard. Devices may also contain functions that are not operational in U.S. Territories. [79 FR 32413, June 4, 2014, as amended at 79 FR 48539, Aug. 15, 2014; 85 FR 22882, Apr. 23, 2020; 86 FR 17954, Apr. 7, 2021] § 27.77 Restriction on mobile and portable equipment in the 1695-1710 MHz and 1755-1780 MHz bands. Mobile and portable stations in the 1695-1710 MHz and 1755-1780 MHz bands may operate only when under the control of a base station. Base stations that enable mobile or portable equipment to operate in the 1695-1710 MHz and 1755-1780 MHz band are subject to prior coordination requirements. See § 27.1134 (Protection of Federal Government operations). [79 FR 32413, June 4, 2014] Subpart D—Competitive Bidding Procedures for the 2305-2320 MHz and 2345-2360 MHz Bands § 27.201 WCS in the 2305-2320 MHz and 2345-2360 MHz bands subject to competitive bidding. Mutually exclusive initial applications for WCS licenses in the 2305-2320 MHz and 2345-2360 MHz bands are subject to competitive bidding. The general competitive bidding procedures set forth in part 1, subpart Q of this chapter will apply unless otherwise provided in this subpart. [67 FR 45373, July 9, 2002] §§ 27.202-27.208 [Reserved] § 27.209 Designated entities; bidding credits; unjust enrichment. (a) Designated entities entitled to preferences in the WCS in the 2305-2320 and 2345-2360 bands auction are small businesses and very small businesses as defined in § 27.110(b). Designated entities will be eligible for bidding credits, as defined in paragraphs (b) and (c) of this section. (b) A winning bidder that qualifies as a small business (c) A winning bidder that qualifies as a very small business [62 FR 9658, Mar. 3, 1997, as amended at 63 FR 2349, Jan. 15, 1998; 65 FR 57268, Sept. 21, 2000; 67 FR 45373, July 9, 2002] § 27.210 Definitions. (a) [Reserved] (b) Small and very small business. small business (2) A very small business [67 FR 45373, July 9, 2002, as amended at 68 FR 43000, July 21, 2003; 90 FR 57705, Dec. 12, 2025] Subpart E—Application, Licensing, and Processing Rules for WCS § 27.301 [Reserved] § 27.302 Eligibility. (a) General. Authorizations will be granted upon proper application if: (1) The applicant is qualified under the applicable laws and the regulations, policies and decisions issued under those laws, including § 27.12; (2) There are frequencies available to provide satisfactory service; and (3) The public interest, convenience or necessity would be served by a grant. (b) Alien Ownership. A WCS authorization may not be granted to or held by an entity not meeting the requirements of section 310 of the Communications Act of 1934, as amended, 47 U.S.C. section 310 insofar as applicable to the particular service in question. § 27.303 Upper 700 MHz commercial and public safety coordination zone. (a) General. (i) The frequency or frequencies on which the facility will operate; (ii) Antenna location and height; (iii) Type of emission; (iv) Effective radiated power; (v) A description of the area served and the operator's name. (2) It is the CMRS operator's responsibility to determine whether referral is required for stations constructed in its area of license. Public safety base stations are considered “planned” when public safety operators have notified, or initiated coordination with, a Commission-approved public safety coordinator. (b) CMRS operators must wait at least 10 business days after submission of the required description before commencing operations on the referenced facility, or implementing modifications to an existing facility. (c) The potential for harmful interference between the CMRS and public safety facilities will be evaluated by the public safety coordinator. (1) With regard to existing public safety facilities, the coordinator's determination to disapprove a proposed CMRS facility (or modification) to be located within 500 meters of the public safety facilities will be presumed correct, but the CMRS operator may seek Commission review of such determinations. Pending Commission review, the CMRS operator will not activate the facility or implement proposed modifications. (2) With regard to proposed public safety facilities, the coordinator's determination to disapprove a proposed CMRS facility (or modification) to be located within 500 meters of the public safety facilities will be presumed correct, but the CMRS operator may seek Commission review and, pending completion of review, operate the facility during construction of the public safety facilities. If coordination or Commission review has not been completed when the public safety facilities are ready to operate, the CMRS operator must cease operations pending completion of coordination or Commission review. Such interim operation of the CMRS facility within the coordination zone (or implementation of modifications) will not be relied on by the Commission in its subsequent review and determination of measures necessary to control interference, including relocation or modification of the CMRS facility. (d) If, in the event of harmful interference between facilities located within 500 meters proximity, the parties are unable, with the involvement of the coordinator, to resolve the problem by mutually satisfactory arrangements, the Commission may impose restrictions on the operations of any of the parties involved. [67 FR 49245, July 30, 2002, as amended at 72 FR 48853, Aug. 24, 2007; 79 FR 599, Jan. 6, 2014] §§ 27.304-27.307 [Reserved] § 27.308 [Reserved] §§ 27.310-27.320 [Reserved] § 27.321 Mutually exclusive applications. (a) Two or more pending applications are mutually exclusive if the grant of one application would effectively preclude the grant of one or more of the others under the Commission's rules governing the Wireless Communications Services involved. The Commission uses the general procedures in this section for processing mutually exclusive applications in the Wireless Communications Services. (b) An application will be entitled to comparative consideration with one or more conflicting applications only if the Commission determines that such comparative consideration will serve the public interest. §§ 27.322-27.325 [Reserved] Subpart F—Competitive Bidding Procedures for the 698-806 MHz Band Source: 65 FR 3149, Jan. 20, 2000, unless otherwise noted. § 27.501 746-758 MHz, 775-788 MHz, and 805-806 MHz bands subject to competitive bidding. Mutually exclusive initial applications for licenses in the 746-758 MHz, 775-788 MHz, and 805-806 MHz bands are subject to competitive bidding. The general competitive bidding procedures set forth in part 1, subpart Q of this chapter will apply unless otherwise provided in this subpart. [79 FR 600, Jan. 6, 2014] § 27.502 Designated entities. Eligibility for small business provisions: (a)(1) A small business is an entity that, together with its controlling interests and affiliates, has average gross revenues not exceeding $40 million for the preceding three years. (2) A very small business is an entity that, together with its controlling interests and affiliates, has average gross revenues not exceeding $15 million for the preceding three years. (b) Bidding credits. [72 FR 63499, Nov. 9, 2007] Subpart G— Guard Band A and B Blocks (757-758/787-788 MHz and 775-776/805-806 MHz Bands) Source: 65 FR 17605, Apr. 4, 2000, unless otherwise noted. § 27.601 Authority and coordination requirements. (a) Subject to the provisions of § 27.2(b), a Guard Band licensee may allow a spectrum lessee, pursuant to a spectrum lease arrangement under part 1, subpart X of this chapter, to construct and operate stations at any available site within the licensed area and on any channel for which the Guard Band licensee is licensed, provided such stations comply with Commission Rules and coordination requirements. (b) Subject to the provisions of § 27.2(b), a Guard Band licensee may allow a spectrum lessee, pursuant to a spectrum lease arrangement under part 1, subpart X of this chapter, to delete, move or change the operating parameters of any of the user's stations that are covered under the Guard Band licensee's authorization without prior Commission approval, provided such stations comply with Commission Rules and coordination requirements. (c) Frequency coordination. (i) Coordinated a new station or modification of an existing station; or (ii) Filed an application for an individual station license with the Commission. (2) The notification required in paragraph (c)(1) of this section must include, at a minimum— (i) The frequency or frequencies coordinated; (ii) Antenna location and height; (iii) Type of emission; (iv) Effective radiated power; (v) A description of the service area, date of coordination, and user name or, in the alternative, a description of the type of operation. (3) In the event a licensee partitions its service area or disaggregates its spectrum, it is required to submit the notification required in paragraph (c)(1) of this section to other Guard Band licensees in the same geographic area. (4) Entities coordinated by a Guard Band licensee, or a spectrum lessee operating pursuant to a spectrum lease arrangement under §§ 1.9030 and 1.9035 of this chapter, must wait at least 10 business days after the notification required in paragraph (c)(1) of this section before operating under the license. (d) Where a deletion, move or change authorized under paragraph (b) of this section constitutes a discontinuance, reduction, or impairment of service under § 27.66 or where discontinuance, reduction or impairment of service results from an involuntary act subject to § 27.66(a), the licensee must comply with the notification and authorization requirements set forth in that section. [72 FR 27712, May 16, 2007, as amended at 72 FR 48853, Aug. 24, 2007] § 27.602 Lease agreements. Guard Band licensees may enter into spectrum leasing arrangements under part 1, subpart X of this chapter regarding the use of their licensed spectrum by spectrum lessees, subject to the following conditions: (a) The spectrum lease agreement between the licensee and the spectrum lessee must specify in detail the operating parameters of the spectrum lessee's system, including power, maximum antenna heights, frequencies of operation, base station location(s), area(s) of operation, and other parameters specified in Commission rules for the use of spectrum identified in § 27.5(b)(1) and (b)(2). (b) The spectrum lease agreement must require the spectrum lessee to use Commission-approved equipment where appropriate and to complete post-construction proofs of system performance prior to system activation. [72 FR 27713, May 16, 2007] § 27.604 [Reserved] § 27.607 [Reserved] Subpart H—Competitive Bidding Procedures for the 698-746 MHz Band Source: 67 FR 5512, Feb. 6, 2002, unless otherwise noted. § 27.701 698-746 MHz bands subject to competitive bidding. Mutually exclusive initial applications for licenses in the 698-746 MHz band are subject to competitive bidding. The general competitive bidding procedures set forth in part 1, subpart Q of this chapter will apply unless otherwise provided in this subpart. [67 FR 45374, July 9, 2002] § 27.702 Designated entities. (a) Eligibility for small business provisions. (2) A very small business is an entity that, together with its controlling interests and affiliates, has average gross revenues not exceeding $15 million for the preceding three years. (3) A small business is an entity that, together with its controlling interests and affiliates, has average gross revenues not exceeding $40 million for the preceding three years. (b) Bidding credits. [67 FR 5512, Feb. 6, 2002, as amended at 68 FR 43000, July 21, 2003] Subpart I—1.4 GHz Band Source: 67 FR 41855, June 20, 2002, unless otherwise noted. § 27.801 [Reserved] § 27.802 Permissible communications. Licensees in the paired 1392-1395 MHz and 1432-1435 MHz bands and unpaired 1390-1392 MHz band are authorized to provide fixed or mobile service, except aeronautical mobile service, subject to the technical requirements of this subpart. § 27.803 Coordination requirements. (a) Licensees in the 1.4 GHz band will be issued geographic area licenses in accordance with the service areas listed in § 27.6(d) and (e). (b) Licensees in the 1.4 GHz Service must file a separate station application with the Commission and obtain an individual station license, prior to construction or operation, of any station: (1) That requires submission of an Environmental Assessment under part 1, § 1.1307 of this chapter; (2) That requires international coordination; (3) That operates in areas listed in part 1, § 1.924 of this chapter; or (4) That requires approval of the Frequency Advisory Subcommittee (FAS) of the Interdepartment Radio Advisory Committee (IRAC). Licensees in the 1432-1435 MHz band must receive FAS approval, prior to operation of fixed sites or mobile units within the NTIA recommended protection radii of the Government sites listed in footnote US83 of § 2.106 of this chapter. (c) Prior to construction of a station, a licensee in the 1.4 GHz Band must register with the Commission any station antenna structure for which notification to the Federal Aviation Administration is required by part 17 of this chapter. (d) It is the licensee's responsibility to determine whether an individual station needs referral to the Commission. (e) The application required in paragraph (b) of this chapter must be filed on the Universal Licensing System. [67 FR 41855, June 20, 2002, as amended at 69 FR 17958, Apr. 6, 2004; 80 FR 38908, July 7, 2015] § 27.804 Field strength limits at WMTS facility. For any operation in the 1392-1395 MHz band, the predicted or measured field strength—into the WMTS band at 1395-1400 MHz—shall not exceed 150 uV/m at the location of any registered WMTS healthcare facility. When performing measurements to determine compliance with this provision, measurement instrumentation employing an average detector and a resolution bandwidth of 1 MHz may be used, provided it accurately represents the true interference potential of the equipment. § 27.805 Geographic partitioning and spectrum disaggregation. An entity that acquires a portion of a 1.4 GHz band licensee's geographic area or spectrum subject to a geographic partitioning or spectrum disaggregation agreement under § 27.15 must function as a 1.4 GHz band licensee and is subject to the obligations and restrictions on the 1.4 GHz band license as set forth in this subpart. § 27.806 1.4 GHz service licenses subject to competitive bidding. Mutually exclusive initial applications for 1.4 GHz Band licenses in the paired 1392-1395 MHz and 1432-1435 MHz bands as well as the unpaired 1390-1392 MHz band are subject to competitive bidding. The general competitive bidding procedures set forth in part 1, subpart Q of this chapter will apply unless otherwise provided in this subpart. § 27.807 Designated entities. (a) Eligibility for small business provisions for 1.4 GHz band licenses in the paired 1392-1395 MHz and 1432-1435 MHz bands and the unpaired 1390-1392 MHz band. (1) A very small business is an entity that, together with its controlling interests and affiliates, has average annual gross revenues not exceeding $15 million for the preceding three years. (2) A small business is an entity that, together with its controlling interests and affiliates, has average annual gross revenues not exceeding $40 million for the preceding three years. (b) Bidding credits. [67 FR 41855, June 20, 2002, as amended at 68 FR 43000, July 21, 2003] Subpart J—1670-1675 MHz Band Source: 67 FR 41856, June 20, 2002, unless otherwise noted. § 27.901 [Reserved] § 27.902 Permissible communications. Licensees in the 1670-1675 MHz band are authorized to provide fixed or mobile service, except aeronautical mobile service, subject to the technical requirements of this subpart. § 27.903 Coordination requirements. (a) The licensee in the 1670-1675 MHz band will be issued a geographic area license on a nationwide basis in accordance with § 27.6(f). (b) Licensees in the 1670-1675 MHz band must file a separate station application with the Commission and obtain an individual station license, prior to construction or operation, of any station: (1) That requires submission of an Environmental Assessment under part 1, § 1.1307 of this chapter; (2) That requires international coordination; (3) That operates in areas listed under part 1, § 1.924 of this chapter. (c) The application required in paragraph (b) of this section must be filed on the Universal Licensing System. (d) Prior to construction of a station, a licensee must register with the Commission any station antenna structure for which notification to the Federal Aviation Administration is required by part 17 of this chapter. (e) It is the licensee's responsibility to determine whether an individual station requires referral to the Commission. [67 FR 41856, June 20, 2002, as amended at 69 FR 17958, Apr. 6, 2004] § 27.904 Geographic partitioning and spectrum disaggregation. An entity that acquires a portion of a 1670-1675 MHz band licensee's geographic area or spectrum subject to a geographic partitioning or spectrum disaggregation agreement under § 27.15 must function as a 1670-1675 MHz licensee and is subject to the obligations and restrictions on the 1670-1675 MHz license as set forth in this subpart. § 27.905 1670-1675 MHz service licenses subject to competitive bidding. Mutually exclusive initial applications for the 1670-1675 MHz Band license are subject to competitive bidding. The general competitive bidding procedures set forth in part 1, subpart Q of this chapter will apply unless otherwise provided in this subpart. § 27.906 Designated entities. (a) Eligibility for small business provisions. (2) A small business is an entity that, together with its controlling interests and affiliates, has average annual gross revenues not exceeding $40 million for the preceding three years. (b) Bidding credits. [67 FR 41856, June 20, 2002, as amended at 68 FR 43000, July 21, 2003] Subpart K—1915-1920 MHz and 1995-2000 MHz Source: 78 FR 50257, Aug. 16, 2013, unless otherwise noted. Licensing and Competitive Bidding Provisions § 27.1001 1915-1920 MHz and 1995-2000 MHz bands subject to competitive bidding. Mutually exclusive initial applications for 1915-1920 MHz and 1995-2000 MHz band licenses are subject to competitive bidding. The general competitive bidding procedures set forth in 47 CFR part 1, subpart Q will apply unless otherwise provided in this subpart. § 27.1002 Designated entities in the 1915-1920 MHz and 1995-2000 MHz bands. Eligibility for small business provisions: (a)(1) A small business is an entity that, together with its affiliates, its controlling interests, and the affiliates of its controlling interests, has average gross revenues not exceeding $40 million for the preceding three years. (2) A very small business is an entity that, together with its affiliates, its controlling interests, and the affiliates of its controlling interests, has average gross revenues not exceeding $15 million for the preceding three years. (b) Bidding credits. [78 FR 50257, Aug. 16, 2013, as amended at 80 FR 56816, Sept. 18, 2015] § 27.1021 [Reserved] § 27.1031 [Reserved] § 27.1041 [Reserved] Subpart L—1695-1710 MHz, 1710-1755 MHz, 1755-1780 MHz, 2110-2155 MHz, 2155-2180 MHz, 2180-2200 MHz Bands Source: 69 FR 5716, Feb. 6, 2004, unless otherwise noted. Licensing and Competitive Bidding Provisions § 27.1101 1710-1755 MHz and 2110-2155 MHz bands subject to competitive bidding. Mutually exclusive initial applications for 1710-1755 MHz and 2110-2155 MHz band licenses are subject to competitive bidding. The general competitive bidding procedures set forth in 47 CFR part 1, subpart Q will apply unless otherwise provided in this subpart. § 27.1102 Designated Entities in the 1710-1755 MHz and 2110-2155 MHz bands. (a) Eligibility for small business provisions. (2) A very small business is an entity that, together with its affiliates, its controlling interests and the affiliates of its controlling interests, has average gross revenues that are not more than $15 million for the preceding three years. (b) Bidding credits. (2) A winning bidder that qualifies as a very small business, as defined in this section, or a consortium of very small businesses may use a bidding credit of 25 percent, as specified in § 1.2110(f)(2)(ii) of this chapter, to lower the cost of its winning bid on any of the licenses in this part. § 27.1103 2000-2020 MHz and 2180-2200 MHz bands subject to competitive bidding. Mutually exclusive initial applications for 2000-2020 MHz and 2180-2200 MHz band licenses are subject to competitive bidding. The general competitive bidding procedures set forth in 47 CFR part 1, subpart Q will apply unless otherwise provided in this subpart. [78 FR 8270, Feb. 5, 2013] § 27.1104 Designated Entities in the 2000-2020 MHz and 2180-2200 MHz bands. Eligibility for small business provisions: (a) Small business. (2) A very small business is an entity that, together with its affiliates, its controlling interests, and the affiliates of its controlling interests, has average gross revenues not exceeding $15 million for the preceding three years. (b) Bidding credits. [78 FR 8270, Feb. 5, 2013, as amended at 80 FR 56816, Sept. 18, 2015] § 27.1105 1695-1710 MHz, 1755-1780 MHz and 2155-2180 MHz bands subject to competitive bidding. Mutually exclusive initial applications for 1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz band licenses are subject to competitive bidding. The general competitive bidding procedures set forth in 47 CFR part 1, subpart Q will apply unless otherwise provided in this subpart. [79 FR 32413, June 4, 2014] § 27.1106 Designated Entities in the 1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz bands. (a) Small business. (2) A very small business is an entity that, together with its affiliates, its controlling interests, and the affiliates of its controlling interests, has average gross revenues not exceeding $20 million for the preceding five (5) years. (b) Bidding credits. (c) Rural service provider bidding credit. [90 FR 36396, Aug. 4, 2025] § 27.1111 [Reserved] Protection of Incumbent Operations §§ 27.1131-27.1132 [Reserved] § 27.1133 Protection of part 74 and part 78 operations. AWS operators must protect previously licensed Broadcast Auxiliary Service (BAS) or Cable Television Radio Service (CARS) operations in the adjacent 2025-2110 MHz band. In satisfying this requirement AWS licensees must, before constructing and operating any base or fixed station, determine the location and licensee of all BAS or CARS stations authorized in their area of operation, and coordinate their planned stations with those licensees. In the event that mutually satisfactory coordination agreements cannot be reached, licensees may seek the assistance of the Commission, and the Commission may, at its discretion, impose requirements on one or both parties. § 27.1134 Protection of Federal Government operations. (a) Protection of Department of Defense operations in the 1710-1755 MHz band. (1) At the Yuma, Arizona and Cherry Point, North Carolina facilities, all operations shall be protected indefinitely. (2) At the remaining 14 facilities, airborne and military test range operations shall be protected until such time as these systems are relocated to other spectrum, and precision guided munitions (PGM) operations shall be protected until such time as these systems are relocated to other spectrum or until PGM inventory at each facility is exhausted, whichever occurs first. (3) AWS licensees whose transmit operations in the 1710-1755 MHz band consist of fixed or mobile operations with nominal transmit EIRP values of 100 mW or less and antenna heights of 1.6 meters above ground or less shall coordinate their services around the 16 sites at the distance specified in row a. of Table 2. AWS licensees whose transmit operations in the 1710-1755 MHz band consist of fixed or mobile operations with nominal transmit EIRP values of 1 W or less and antenna heights of 10 meters above ground or less shall coordinate their services around the 16 sites at the distance specified in row b. of Table 2. These coordination distances shall be measured from the edge of the operational distances indicated in the third column of Table 1, and coordination with each affected DoD facility shall be accomplished through the Commander of the facility. Table 1—Protected Department of Defense Facilities Location Coordinates Radius of Cherry Point, NC 34°58′ N, 076°56′ W 100 Yuma, AZ 32°32′ N, 113°58′ W 120 China Lake, CA 35°41′ N, 117°41′ W 120 Eglin AFB, FL 30°29′ N, 086°31′ W 120 Pacific Missile Test Range/Point Mugu, CA 34°07′ N, 119°30′ W 80 Nellis AFB, NV 36°14′ N, 115°02′ W 160 Hill AFB, UT 41°07′ N, 111°58′ W 160 Patuxent River, MD 38°17′ N, 076°25′ W 80 White Sands Missile Range, NM 33°00′ N, 106°30′ W 80 Fort Irwin, CA 35°16′ N, 116°41′ W 50 Fort Rucker, AL 31°13′ N, 085°49′ W 50 Fort Bragg, NC 35°09′ N, 079°01′ W 50 Fort Campbell, KY 36°41′ N, 087°28′ W 50 Fort Lewis, WA 47°05′ N, 122°36′ W 50 Fort Benning, GA 32°22′ N, 084°56′ W 50 Fort Stewart, GA 31°52′ N, 081°37′ W 50 Table 2—Coordination Distances for the Protected Department Of Defense Facilities 1710-1755 MHz transmit operations Coordination a. EIRP ≤100 mW, antenna height ≤1.6 m AG 35 b. EIRP ≤1 W, antenna height ≤10 m AG 55 (b) Protection of non-DoD operations in the 1710-1755 MHz and 1755-1761 MHz bands. (c) Protection of Federal operations in the 1675-1710 MHz band 27 Protection Zones. (2) Operation outside of 27 Protection Zones. (3) Interference. (4) Point of contact. (5) Coordination procedures. (6) Requirements for licensees operating in the 1710-1755 MHz band. (d) Recognition of NASA Goldstone facility operations in the 2110-2120 MHz band. see Table 3—Location of the NASA Goldstone Deep Space Facility Location Coordinates Maximum Goldstone, California 35°18′ N 116°54′ W 500 kW (e) Protection of Federal operations in the 2200-2290 MHz band Default emission limits. (i) For these AWS-4 operations, the power of any emissions on all frequencies between 2200 and 2290 MHz shall not exceed an EIRP of −100.6 dBW/4 kHz. (ii) No AWS-4 base station operating in the 2180-2200 MHz band shall be located less than 820 meters from a U.S. Earth Station facility operating in the 2200-2290 MHz band. (2) Agreements between AWS-4 operators and Federal government entities. (f) Protection of Federal operations in the 1755-1780 MHz band. (1) Protection Zone(s). (i) Federal US&P Assignments. (ii) Other Federal Assignments. (2) Interference. (3) Point of contact. (4) Coordination procedures. [69 FR 5716, Feb. 6, 2004, as amended at 73 FR 50571, Aug. 27, 2008; 78 FR 8270, Jan. 5, 2013; 79 FR 32414, June 4, 2014] § 27.1135 Protection of non-Federal Government Meteorological-Satellite operations. AWS licensees operating fixed stations in the 1710-1755 MHz band, if notified that such stations are causing interference to meteorological-satellite earth receivers operating in the Meteorological-Satellite Service in the 1675-1710 MHz band, shall be required to modify the stations' location and/or technical parameters as necessary to eliminate the interference. § 27.1136 Protection of mobile satellite services in the 2000-2020 MHz and 2180-2200 MHz bands. An AWS licensee of the 2000-2020 MHz and 2180-2200 MHz bands must accept any interference received from duly authorized mobile satellite service operations in these bands. Any such AWS licensees must protect mobile satellite service operations in these bands from harmful interference. [78 FR 8270, Jan. 5, 2013] §§ 27.1160-27.1174 [Reserved] §§ 27.1176-27.1190 [Reserved] Subpart M—Broadband Radio Service and Educational Broadband Service Source: 69 FR 72034, Dec. 10, 2004, unless otherwise noted. § 27.1200 [Reserved] § 27.1201 [Reserved] § 27.1202 Cable/BRS cross-ownership. (a) Initial or modified authorizations for BRS stations may not be granted to a cable operator if a portion of the BRS station's protected services area is within the portion of the franchise area actually served by the cable operator's cable system and the cable operator will be using the BRS station as a multichannel video programming distributor (as defined in § 76.64(d) of this chapter). No cable operator may acquire such authorization either directly, or indirectly through an affiliate owned, operated, or controlled by or under common control with a cable operator if the cable operator will use the BRS station as a multichannel video programming distributor. (b) No licensee of a station in this service may lease transmission time or capacity to a cable operator either directly, or indirectly through an affiliate owned, operated, controlled by, or under common control with a cable operator, if a portion of the BRS station's protected services area is within the portion of the franchise area actually served by the cable operator's cable system the cable operator will use the BRS station as a multichannel video programming distributor. (c) Applications for new stations, station modifications, assignments or transfers of control by cable operators of BRS stations shall include a showing that no portion of the GSA of the BRS station is within the portion of the franchise area actually served by the cable operator's cable system, or of any entity indirectly affiliated, owned, operated, controlled by, or under common control with the cable operator. Alternatively, the cable operator may certify that it will not use the BRS station to distribute multichannel video programming. (d) In applying the provisions of this section, ownership and other interests in BRS licensees or cable television systems will be attributed to their holders and deemed cognizable pursuant to the following criteria: (1) Except as otherwise provided herein, partnership and direct ownership interests and any voting stock interest amounting to 5% or more of the outstanding voting stock of a corporate BRS licensee or cable television system will be cognizable; (2) Investment companies, as defined in 15 U.S.C. 80a-3, insurance companies and banks holding stock through their trust departments in trust accounts will be considered to have a cognizable interest only if they hold 20% or more of the outstanding voting stock of a corporate BRS licensee or cable television system, or if any of the officers or directors of the BRS licensee or cable television system are representatives of the investment company, insurance company or bank concerned. Holdings by a bank or insurance company will be aggregated if the bank or insurance company has any right to determine how the stock will be voted. Holdings by investment companies will be aggregated if under common management. (3) Attribution of ownership interests in a BRS licensee or cable television system that are held indirectly by any party through one or more intervening corporations will be determined by successive multiplication of the ownership percentages for each link in the vertical ownership chain and application of the relevant attribution benchmark to the resulting product, except that wherever the ownership percentage for any link in the chain exceeds 50%, it shall not be included for purposes of this multiplication. For purposes of paragraph (d)(9) of this section, attribution of ownership interests in a BRS licensee or cable television system that are held indirectly by any party through one or more intervening organizations will be determined by successive multiplication of the ownership percentages for each link in the vertical ownership chain and application of the relevant attribution benchmark to the resulting product, and the ownership percentage for any link in the chain that exceeds 50% shall be included for purposes of this multiplication. For example, except for purposes of paragraph (d)(9) of this section, if A owns 10% of company X, which owns 60% of company Y, which owns 25% of “Licensee,” then X's interest in “Licensee” would be 25% (the same as Y's interest because X's interest in Y exceeds 50%), and A's interest in “Licensee” would be 2.5% (0.1 × 0.25). Under the 5% attribution benchmark, X's interest in “Licensee” would be cognizable, while A's interest would not be cognizable. For purposes of paragraph (d)(9) of this section, X's interest in “Licensee” would be 15% (0.6 × 0.25) and A's interest in “Licensee” would be 1.5% (0.1 × 0.6 × 0.25). Neither interest would be attributed under paragraph (d)(9) of this section. (4) Voting stock interests held in trust shall be attributed to any person who holds or shares the power to vote such stock, to any person who has the sole power to sell such stock, and to any person who has the right to revoke the trust at will or to replace the trustee at will. If the trustee has a familial, personal or extra-trust business relationship to the grantor or the beneficiary, the grantor or beneficiary, as appropriate, will be attributed with the stock interests held in trust. An otherwise qualified trust will be ineffective to insulate the grantor or beneficiary from attribution with the trust's assets unless all voting stock interests held by the grantor or beneficiary in the relevant BRS licensee or cable television system are subject to said trust. (5) Subject to paragraph (d)(9) of this section, holders of non-voting stock shall not be attributed an interest in the issuing entity. Subject to paragraph (d)(9) of this section, holders of debt and instruments such as warrants, convertible debentures, options or other non-voting interests with rights of conversion to voting interests shall not be attributed unless and until conversion is effected. (6)(i) A limited partnership interest shall be attributed to a limited partner unless that partner is not materially involved, directly or indirectly, in the management or operation of the BRS or cable television activities of the partnership and the licensee or system so certifies. An interest in a Limited Liability Company (“LLC”) or Registered Limited Liability Partnership (“RLLP”) shall be attributed to the interest holder unless that interest holder is not materially involved, directly or indirectly, in the management or operation of the BRS or cable television activities of the partnership and the licensee or system so certifies. (ii) For a licensee or system that is a limited partnership to make the certification set forth in paragraph (d)(6)(i) of this section, it must verify that the partnership agreement or certificate of limited partnership, with respect to the particular limited partner exempt from attribution, establishes that the exempt limited partner has no material involvement, directly or indirectly, in the management or operation of the BRS or cable television activities of the partnership. For a licensee or system that is an LLC or RLLP to make the certification set forth in paragraph (d)(6)(i) of this section, it must verify that the organizational document, with respect to the particular interest holder exempt from attribution, establishes that the exempt interest holder has no material involvement, directly or indirectly, in the management or operation of the BRS or cable television activities of the LLC or RLLP. Irrespective of the terms of the certificate of limited partnership or partnership agreement, or other organizational document in the case of an LLC or RLLP, however, no such certification shall be made if the individual or entity making the certification has actual knowledge of any material involvement of the limited partners, or other interest holders in the case of an LLC or RLLP, in the management or operation of the BRS or cable television businesses of the partnership or LLC or RLLP. (iii) In the case of an LLC or RLLP, the licensee or system seeking installation shall certify, in addition, that the relevant state statute authorizing LLCs permits an LLC member to insulate itself as required by our criteria. (7) Officers and directors of a BRS licensee or cable television system are considered to have a cognizable interest in the entity with which they are so associated. If any such entity engages in businesses in addition to its primary business of BRS or cable television service, it may request the Commission to waive attribution for any officer or director whose duties and responsibilities are wholly unrelated to its primary business. The officers and directors of a parent company of a BRS licensee or cable television system, with an attributable interest in any such subsidiary entity, shall be deemed to have a cognizable interest in the subsidiary unless the duties and responsibilities of the officer or director involved are wholly unrelated to the BRS licensee or cable television system subsidiary, and a statement properly documenting this fact is submitted to the Commission. The officers and directors of a sister corporation of a BRS licensee or cable television system shall not be attributed with ownership of these entities by virtue of such status. (8) Discrete ownership interests will be aggregated in determining whether or not an interest is cognizable under this section. An individual or entity will be deemed to have a cognizable investment if: (i) The sum of the interests held by or through “passive investors” is equal to or exceeds 20 percent; or (ii) The sum of the interests other than those held by or through “passive investors” is equal to or exceeds 5 percent; or (iii) The sum of the interests computed under paragraph (d)(8)(i) of this section plus the sum of the interests computed under paragraph (d)(8)(ii) of this section equal to or exceeds 20 percent. (9) Notwithstanding paragraphs (d)(5) and (d)(6) of this section, the holder of an equity or debt interest or interests in a BRS licensee or cable television system subject to the BRS/cable cross-ownership rule (“interest holder”) shall have that interest attributed if: (i) The equity (including all stockholdings, whether voting or nonvoting, common or preferred) and debt interest or interests, in the aggregate, exceed 33 percent of the total asset value (all equity plus all debt) of that BRS licensee or cable television system; and (ii) The interest holder also holds an interest in a BRS licensee or cable television system that is attributable under this section (other than this paragraph) and which operates in any portion of the franchise area served by that cable operator's cable system. (10) The term “area served by a cable system” means any area actually passed by the cable operator's cable system and which can be connected for a standard connection fee. (11) As used in this section “cable operator” shall have the same definition as in § 76.5 of this chapter. (e) The Commission will entertain requests to waive the restrictions in paragraph (a) of this section where necessary to ensure that all significant portions of the franchise area are able to obtain multichannel video service. (f) The provisions of paragraphs (a) through (e) of this section will not apply to one BRS channel used to provide locally-produced programming to cable headends. Locally-produced programming is programming produced in or near the cable operator's franchise area and not broadcast on a television station available within that franchise area. A cable operator will be permitted one BRS channel for this purpose, and no more than one BRS channel may be used by a cable television company or its affiliate or lessor pursuant to this paragraph. The licensee for a cable operator providing local programming pursuant to a lease must include in a notice filed with the Wireless Telecommunications Bureau a cover letter explicitly identifying itself or its lessees as a local cable operator and stating that the lease was executed to facilitate the provision of local programming. The first application or the first lease notification in an area filed with the Commission will be entitled to the exemption. The limitations on one BRS channel per party and per area include any cable/BRS operations or cable/EBS operations. The cable operator must demonstrate in its BRS application that the proposed local programming will be provided within one year from the date its application is granted. Local programming service pursuant to a lease must be provided within one year of the date of the lease or one year of grant of the licensee's application for the leased channel, whichever is later. If a BRS license for these purposes is granted and the programming is subsequently discontinued, the license will be automatically forfeited the day after local programming service is discontinued. (g) Applications filed by cable television companies, or affiliates, for BRS channels prior to February 8, 1990, will not be subject to the prohibitions of this section. Applications filed on February 8, 1990, or thereafter will be returned. Lease arrangements between cable and BRS entities for which a lease or a firm agreement was signed prior to February 8, 1990, will also not be subject to the prohibitions of this section. Leases between cable television companies, or affiliates, and BRS station licensees, conditional licensees, or applicants executed on February 8, 1990, or thereafter, are invalid. (1) Applications filed by cable operators, or affiliates, for BRS channels prior to February 8, 1990, will not be subject to the prohibitions of this section. Except as provided in paragraph (g)(2)of this section, applications filed on February 8, 1990, or thereafter will be returned. Lease arrangements between cable and BRS entities for which a lease or a firm agreement was signed prior to February 8, 1990, will also not be subject to the prohibitions of this section. Except as provided in paragraph (g)(2) of this section, leases between cable operators, or affiliates, and BRS/EBS station licensees, conditional licensees, or applicants executed on or before February 8, 1990, or thereafter are invalid. (2) Applications filed by cable operators, or affiliates for BRS channels after February 8, 1990, and prior to October 5, 1992, will not be subject to the prohibition of this section, if, pursuant to the then existing overbuild or rural exceptions, the applications were allowed under the then existing cable/BRS cross-ownership prohibitions. Lease arrangements between cable operators and BRS entities for which a lease or firm agreement was signed after February 8, 1990, and prior to October 5, 1992, will not be subject to the prohibitions of this section, if, pursuant to the then existing rural and overbuild exceptions, the lease arrangements were allowed. (3) The limitations on cable television ownership in this section do not apply to any cable operator in any franchise area in which a cable operator is subject to effective competition as determined under section 623(l) of the Communications Act. [69 FR 72034, Dec. 10, 2004, as amended at 71 FR 35190, June 19, 2006] § 27.1203 [Reserved] § 27.1204 EBS Tribal priority filing window. (a) The Commission will specify by public notice a window filing period for applications for new EBS stations on rural Tribal Lands. EBS applications for new facilities will be accepted only during this window. Applications submitted prior to the window opening date identified in the public notice will be returned as premature. Applications submitted after the deadline will be dismissed with prejudice as untimely. (b) Applicants in the Tribal priority filing window must demonstrate that they are eligible to file in that window. To be considered eligible for the Tribal priority window, an applicant must be: (1) A federally recognized American Indian Tribe or Alaska Native Village; or an entity that is owned and controlled by a federally-recognized Tribe or a consortium of federally-recognized Tribes; (2) Requesting a license on Tribal Land, which is defined to be any federally recognized Indian Tribe's reservation, pueblo or colony, including former reservations in Oklahoma, Alaska Native regions established pursuant to the Alaska Native Claims Settlement Act (85 Stat. 688) and Indian Allotments, see § 54.400(e) of this chapter, as well as Hawaiian Home Lands—areas held in trust for native Hawaiians by the State of Hawaii, pursuant to the Hawaiian Homes Commission Act, 1920, July 9, 1921, 42 Stat 108, et seq., (3) Requesting a GSA in a rural area, which is defined to be lands that are not part of an urbanized area or urban cluster area with a population equal to or greater than 50,000; and (4) Have a local presence on the Tribal Land for which they are applying. (c) Following the close of the Tribal priority window, the Commission will issue a public notice of acceptance for filing of applications submitted pursuant to paragraph (b) of this section that meet technical and legal requirements and that are not in conflict with any other application filed during the window. Petitions to deny such applications may be filed within 30 days of such public notice. A copy of any petition to deny must be served on the applicant. (d) If applications are filed in the Tribal priority window that are mutually exclusive, the Commission will use competitive bidding to resolve the mutual exclusivity. Two or more pending applications are mutually exclusive if the grant of one application would effectively preclude the grant of one or more of the others under Commission rules in this chapter. (e) For non-mutually exclusive applications, the applications will be processed in accordance with procedures to be specified by the Wireless Telecommunications Bureau. [84 FR 57365, Oct. 25, 2019, as amended at 85 FR 1284, Jan. 10, 2020] § 27.1205 EBS renewal standard. In applying the renewal standard contained in § 1.949 of this chapter to EBS, for licenses initially issued after October 25, 2019, the applicable safe harbors are the buildout standards contained in § 27.14(u). For licenses initially issued before October 25, 2019, the applicable safe harbors are the buildout standards contained in § 27.14(o); provided, however, that the educational use safe harbor contained in § 27.14(o)(2) may only be used by a licensee that meets the eligibility requirements to hold an EBS license pursuant to the provisions of § 27.1201(a) contained in the edition of 47 CFR parts 20 through 39, revised as of October 1, 2017. [84 FR 57365, Oct. 25, 2019] § 27.1206 Geographic service area. (a) BRS: (1) For BRS incumbent licenses granted before September 15, 1995, the geographic service area (GSA) is the area that is bounded by a circle having a 35 mile radius and centered at the station's reference coordinates, which was the previous PSA entitled to incumbent licensees prior to January 10, 2005, and is bounded by the chord(s) drawn between intersection points of the licensee's previous 35 mile PSA and those of respective adjacent market, co-channel licensees; (2) For BRS BTA authorization holders, the GSA for a channel is the BTA, subject to the exclusion of overlapping, co-channel incumbent GSAs created on January 10, 2005. (3) If an incumbent BRS license is cancelled or is forfeited, the GSA area of the incumbent station shall dissolve and the right to operate in that area automatically reverts to the GSA licensee that held the corresponding BTA. (b) EBS: (1) Existing EBS licensees. (ii) For incumbent EBS licenses not in the E and F channel groups in effect as of October 25, 2019, the geographic service area (GSA) is the area that is bounded by a circle having a 35 mile radius and centered at the station's reference coordinates, which was the previous PSA entitled to incumbent licensees prior to January 10, 2005, and is bounded by the chord(s) drawn between intersection points of the licensee's previous 35 mile PSA and those of respective adjacent market, co-channel licensees. (2) New initial EBS licenses. (ii) For all other new initial licenses issued after April 27, 2020, the GSA is the county for which the license is issued, subject to the exclusion of overlapping, co-channel incumbent GSAs. [84 FR 57365, Oct. 25, 2019] § 27.1207 Service areas and authorizations. (a) Initial authorizations for BRS granted after January 1, 2008, shall be blanket licenses for all BRS frequencies identified in § 27.5(i)(2). Except for incumbent BRS licenses, BRS service areas are the 1992 version of Basic Trading Areas (BTAs) defined by Rand McNally, or additional service areas similar to BTAs adopted by the Commission. The market area for each license will be listed on the license authorization. The following are additional BRS service areas in places where Rand McNally has not defined BTAs: American Samoa; Guam; Gulf of Mexico Zone A; Gulf of Mexico Zone B; Gulf of Mexico Zone C; Northern Mariana Islands; Mayaguez/Aguadilla-Ponce, Puerto Rico; San Juan, Puerto Rico; and the United States Virgin Islands. The boundaries of Gulf of Mexico Zone A are from an area twelve nautical miles from the shoreline at mean high tide on the north and east, to the limit of the Outer Continental Shelf to the south, and to longitude 91°00′ to the west. The boundaries of Gulf of Mexico Zone B are from an area twelve nautical miles from the shoreline at mean high tide on the north, to the limit of the Outer Continental Shelf to the south, to longitude 91°00′ to the east, and to longitude 94°00′ to the west. The boundaries of Gulf of Mexico Zone C are from an area twelve nautical miles from the shoreline at mean high tide on the north and west, to longitude 94°00′ to the east, and to a line 281 kilometers from the reference point at Linares, N.L., Mexico on the southwest. The Mayaguez/Aguadilla-Ponce, PR, service area consists of the following municipios: Adjuntas, Aguada, Aguadilla, Anasco, Arroyo, Cabo Rojo, Coamo, Guanica, Guayama, Guayanilla, Hormigueros, Isabela, Jayuya, Juana Diaz, Lajas, Las Marias, Maricao, Maunabo, Mayaguez, Moca, Patillas, Penuelas, Ponce, Quebradillas, Rincón, Sabana Grande, Salinas, San German, Santa Isabel, Villalba and Yauco. The San Juan service area consists of all other municipios in Puerto Rico. (b) For EBS initial licenses issued after October 25, 2019, except for licenses issued in the Tribal Priority Window, the GSA is the county for which the license is issued, subject to the exclusion of overlapping, co-channel incumbent GSAs. For purposes of this subpart, counties are defined using the United States Census Bureau's data reflecting county legal boundaries and names valid through January 1, 2017. Except for licenses issued in the Tribal Priority Window, there shall be three initial authorizations issued in each county: One authorization for channels A1, A2, A3, B1, B2, B3, C1, C2, and C3; the second authorization for channels D1, D2, D3, JA1, JA2, JA3, JB1, JB2, JB3, JC1, JC2, JC3, JD1, JD2, JD3, A4, B4, C4, D4, and G4; the third authorization for channels G1, G2, G3, KG1, KG2, and KG3. [84 FR 57366, Oct. 25, 2019] § 27.1208 Geographic area licensing. (a) All BRS and EBS licenses are geographic area licenses. Blanket licenses cover all mobile and response stations. Pursuant to that geographic area license, incumbent licensees may modify their systems provided the modified system complies with the applicable rules in this chapter. The blanket license covers all fixed stations anywhere within the authorized service area, except a station must be individually licensed if: (1) International agreements require coordination; (2) Submission of an Environmental Assessment is required under § 1.1307 of this chapter; and (3) The station would affect the radio quiet zones under § 1.924 of this chapter. (b) Any antenna structure that requires notification to the Federal Aviation Administration (FAA) must be registered with the Commission prior to construction under § 17.4 of this chapter. [84 FR 57366, Oct. 25, 2019] § 27.1209 Reversion and overlay rights. (a) The frequencies associated with BRS incumbent authorizations that have cancelled automatically or otherwise recovered by the Commission automatically revert to the applicable BRS BTA licensee. (b) The frequencies associated with EBS incumbent authorizations with a geographic service area that have cancelled automatically or otherwise recovered by the Commission automatically revert to a co-channel EBS county-based licensee, except that if the area in question is Tribal Land as defined in § 27.1204(b)(3) and is contiguous to the GSA of a co-channel authorization issued in the Tribal Priority Window, the area consisting of Tribal Land reverts to the co-channel license issued in the Tribal Priority Window. (c) The frequencies associated with EBS authorizations issued in the Tribal Priority Window with a geographic service area that have cancelled automatically or otherwise recovered by the Commission automatically revert to a co-channel EBS county-based authorization. [84 FR 57366, Oct. 25, 2019] § 27.1210 Remote control operation. Licensed BRS/EBS stations may be operated by remote control without further authority. § 27.1211 Unattended operation. Unattended operation of licensed BRS/EBS stations is permitted without further authority. An unattended relay station may be employed to receive and retransmit signals of another station provided that the transmitter is equipped with circuits which permit it to radiate only when the signal intended to be retransmitted is present at the receiver input terminals. § 27.1212 License term. (a) BRS/EBS licenses shall be issued for a period of 10 years beginning with the date of grant. (b) An initial BTA authorization shall be issued for a period of ten years from the date the Commission declared bidding closed in the MDS auction. §§ 27.1213-27.1215 [Reserved] § 27.1216 Grandfathered E and F group EBS licenses. (a) Except as noted in paragraph (b) of this section, grandfathered EBS licensees authorized to operate E and F group co-channel licenses are granted a geographic service area (GSA) on July 19, 2006. The GSA is the area bounded by a circle having a 35 mile radius and centered at the station's reference coordinates, and is bounded by the chord(s) drawn between intersection points of that circle and those of respective adjacent market, co-channel licensees. (b) [Reserved] [71 FR 35191, June 16, 2006, as amended at 90 FR 57706, Dec. 12, 2025] § 27.1217 Competitive bidding procedures for the Broadband Radio Service and the Educational Broadband Service. Mutually exclusive initial applications for BRS and EBS licenses are subject to competitive bidding. For BRS auctions, the designated entity provisions of § 27.1218 apply. For EBS auctions, the designated entity provisions of § 27.1219 apply. The general competitive bidding procedures set forth in part 1, subpart Q, of this chapter apply unless otherwise provided in this subpart. [84 FR 57366, Oct. 25, 2019] § 27.1218 Broadband Radio Service designated entity provisions. (a) Eligibility for small business provisions. (2) A very small business is an entity that, together with all attributed parties, has average gross revenues that are not more than $15 million for the preceding three years. (3) An entrepreneur is an entity that, together with all attributed parties, has average gross revenues that are not more than $3 million for the preceding three years. (b) Bidding credits. (2) A winning bidder that qualifies as a very small business, as defined in this section, or a consortium of very small businesses, may use a bidding credit of 25 percent, as specified in § 1.2110(f)(2)(ii) of this chapter, to lower the cost of its winning bid on any of the licenses in this subpart. (3) A winning bidder that qualifies as an entrepreneur, as defined in this section, or a consortium of entrepreneurs, may use a bidding credit of 15 percent, as specified in § 1.2110(f)(2)(i) of this chapter, to lower the cost of its winning bid on any of the licenses in this subpart. [73 FR 26041, May 8, 2008] § 27.1219 Educational Broadband Service designated entity provisions. (a) Eligibility for small business provisions. (2) A very small business is an entity that, together with its affiliates, its controlling interests and the affiliates of its controlling interests, has average gross revenues that are not more than $20 million for the preceding five (5) years. (b) Bidding credits. (c) Rural service provider credit. [84 FR 57366, Oct. 25, 2019; 84 FR 64209, Nov. 21, 2019] Technical Standards § 27.1220 Transmission standards. The width of a channel in the LBS and UBS is 5.5 MHz, with the exception of BRS channels 1 and 2 which are 6.0 MHz. The width of all channels in the MBS is 6 MHz. However, the licensee may subchannelize its authorized bandwidth, provided that digital modulation is employed and the aggregate power does not exceed the authorized power for the channel. The licensee may also, jointly with other licensees, transmit utilizing bandwidth in excess of its authorized bandwidth, provided that digital modulation is employed, all power spectral density requirements set forth in this part are met and the out-of-band emissions restrictions set forth in § 27.53 are met at the edges of the channels employed. § 27.1221 Interference protection. (a) Interference protection will be afforded to BRS and EBS on a station-by-station basis based on the heights of the stations in the LBS and UBS and also on height benchmarking, although the heights of antennas utilized are not restricted. (b) Height benchmarking. m km 2 m km 2 m m (c) Protection for receiving antennas not exceeding the height benchmark. (i) 24 hours after receiving such notification, if the base station that exceeds its height benchmark commenced operations after the station that is within its applicable height benchmark; or (ii) 90 days after receiving such notification, if the base station that exceeds its height commenced operations prior to the station that is within its applicable height benchmark. For purposes of this section, if the interfering base station has been modified to increase the EIRP transmitted in the direction of the victim base station, it shall be deemed to have commenced operations on the date of such modification. (d) No Protection from a transmitting antenna not exceeding the height benchmark. (e) No protection for a receiving-antenna exceeding the height benchmark. (f) Information exchange. [69 FR 72034, Dec. 10, 2004, as amended at 70 FR 1190, Jan. 6, 2005; 71 FR 35191, June 19, 2006; 73 FR 26041, May 8, 2008] § 27.1222 Operations in the 2568-2572 and 2614-2618 bands. All operations in the 2568-2572 and 2614-2618 MHz bands shall be secondary to adjacent-channel operations. Stations operating in the 2568-2572 and 2614-2618 MHz must not cause interference to licensees in operation in the LBS, MBS, and UBS and must accept any interference from any station operating in the LBS, MBS, and UBS in compliance with the rules established in this subpart. Stations operating in the 2568-2572 and 2614-2618 bands may cause interference to stations in operation in the LBS, MBS, and UBS if the affected licensees consent to such interference. §§ 27.1250-27.1255 [Reserved] Subpart N—600 MHz Band Source: 79 FR 48539, Aug. 15, 2014, unless otherwise noted. Competitive Bidding Provisions § 27.1300 600 MHz band subject to competitive bidding. As required by section 6403(c) of the Spectrum Act, applications for 600 MHz band initial licenses are subject to competitive bidding. The general competitive bidding procedures set forth in 47 CFR part 1, subpart Q will apply unless otherwise provided in this subpart. § 27.1301 Designated entities in the 600 MHz band. (a) Small business. (2) A very small business is an entity that, together with its affiliates, its controlling interests, and the affiliates of its controlling interests, has average gross revenues not exceeding $20 million for the preceding three (3) years. (b) Eligible rural service provider. (c) Bidding credits. (2) An entity that qualifies as eligible rural service provider or a consortium of rural service providers may use the bidding credit specified in § 1.2110(f)(4) of this chapter. [80 FR 56817, Sept. 18, 2015] Coordination/Notification Requirements § 27.1320 Notification to white space database administrators. To receive interference protection, 600 MHz licensees shall notify one of the white space database administrators of the areas where they have commenced operation pursuant to §§ 15.713(j)(10) and 15.715(n) of this chapter. [80 FR 73085, Nov. 23, 2015] § 27.1321 Requirements for operation of base and fixed stations in the 600 MHz downlink band in close proximity to Radio Astronomy Observatories. (a) Licensees must make reasonable efforts to protect the radio astronomy observatory at Green Bank, WV, Arecibo, PR, and those identified in § 15.712(h)(3) of this chapter as part of the Very Long Baseline Array (VLBA) from interference. (b) 600 MHz band base and fixed stations in the 600 MHz downlink band within 25 kilometers of VLBA observatories are subject to coordination with the National Science Foundation (NSF) prior to commencing operations. The appropriate NSF contact point to initiate coordination is: Division of Astronomical Sciences, Electromagnetic Spectrum Management Unit, 2415 Eisenhower Avenue, Alexandria, VA 22314; Email: [email protected]. (c) Any licensee that intends to operate base and fixed stations in the 600 MHz downlink band in locations near the Radio Astronomy Observatory site located in Green Bank, Pocahontas County, West Virginia, or near the Arecibo Observatory in Puerto Rico, must comply with the provisions in § 1.924 of this chapter. [79 FR 48538, Aug. 15, 2014. Redesignated at 81 FR 4975, Jan. 29, 2016; 85 FR 38740, June 26, 2020] Subpart O—3.7 GHz Service (3700-3980 MHz) Link to an amendment published at 91 FR 48743, July 31, 2026. Source: 85 FR 22882, Apr. 23, 2020, unless otherwise noted. § 27.1401 Licenses in the 3.7 GHz Service are subject to competitive bidding. Mutually exclusive initial applications for licenses in the 3.7 GHz Service are subject to competitive bidding. The general competitive bidding procedures set forth in 47 CFR part 1, subpart Q, will apply unless otherwise provided in this subpart. § 27.1402 Designated entities in the 3.7 GHz Service. (a) Eligibility for small business provisions Definitions Small business. (ii) Very small business. (2) Bidding credits. (b) Eligibility for rural service provider bidding credit. § 27.1411 Transition of the 3700-3980 MHz band to the 3.7 GHz Service. Link to an amendment published at 91 FR 48743, July 31, 2026. (a) Transition of the 3700-3798 MHz Band. (b) Definitions Incumbent space station operator. (2) Eligible space station operator. (3) Incumbent earth station. (4) Earth station migration. (5) Earth station filtering. (6) Contiguous United States see (7) Relocation Payment Clearinghouse. (8) Relocation Coordinator. § 27.1412 Transition Plan. Link to an amendment published at 91 FR 48744, July 31, 2026. Link to an amendment published at 91 FR 48745, July 31, 2026. (a) Relocation deadlines. e.g., (b) Accelerated relocation deadlines. (1) Phase I deadline. (2) Phase II deadline. (3) Transition delays. (i) An eligible space station operator must submit a notice of any incumbent earth station transition delays to the Wireless Telecommunications Bureau within 7 days of discovering an inability to accomplish the assigned earth station transition task. Such a request must include supporting documentation to allow for resolution as soon as practicable and must be submitted before the accelerated relocation deadlines. (ii) [Reserved] (4) Responsibility for meeting accelerated relocation deadlines. (c) Accelerated relocation election. (1) The Wireless Telecommunications Bureau will prescribe the precise form of such election via Public Notice no later than May 12, 2020. (2) Each eligible space station operator that that makes an accelerated relocation election will be required, as part of its filing of this accelerated relocation election, to commit to paying the administrative costs of the Clearinghouse until the Commission awards licenses to the winning bidders in the auction, at which time those administrative costs will be repaid to those space station operators. (d) Transition Plan. (1) The Transition Plan must detail the eligible space station operator's individual timeline and necessary actions for clearing its transponders from the 3700-4000 MHz band, including: (i) All existing space stations with operations that will need to be transitioned to operations above 4000 MHz; (ii) The number of new satellites, if any, that the space station operator will need to launch in order to maintain sufficient capacity post-transition, including detailed descriptions of why such new satellites are necessary; (iii) The specific grooming plan for migrating existing services above 4000 MHz, including the pre- and post-transition frequencies that each customer will occupy; (iv) Any necessary technology upgrades or other solutions, such as video compression or modulation, that the space station operator intends to implement; (v) The number and location of incumbent earth stations antennas currently receiving the space station operator's transmissions that will need to be transitioned above 4000 MHz; (vi) An estimate of the number and location of incumbent earth station antennas that will require retuning and/or repointing in order to receive content on new transponder frequencies post-transition; and (vii) The specific timeline by which the space station operator will implement the actions described in its plan including any commitments to satisfy an early clearing. (2) To the extent that incumbent earth stations are not accounted for in eligible space station operators' Transition Plans, the Relocation Coordinator must prepare an Earth Station Transition Plan for such incumbent earth stations and may require each associated space station operator to file the information needed for such a plan with the Relocation Coordinator. (i) Where space station operators do not elect to clear by the accelerated relocation deadlines and therefore are not responsible for earth station relocation, the Earth Station Transition Plan must provide timelines that ensure all earth station relocation is completed no later than the relocation deadline. (ii) The Relocation Coordinator will describe and recommend the respective responsibility of each party for earth station migration and filtering obligations in the Earth Station Transition Plan and assist incumbent earth stations in transitioning including, for example, by installing filters or hiring a third party to install such filters to the extent necessary. (e) Incumbent earth station opt-out. (f) Space station status reports. (g) Certification of accelerated relocation. (1) The Bureau, Clearinghouse, and relevant stakeholders will have the opportunity to review the certification of accelerated relocation and identify potential deficiencies. The Wireless Telecommunications Bureau will prescribe the form of any challenges by relevant stakeholders as to the validity of the certification and will establish the process for how such challenges will impact the incremental decreases in the accelerated relocation payment as set- forth in § 27.1422(d). (2) If credible challenges as to the space station operator's satisfaction of the relevant deadline are made, the Bureau will issue a public notice identifying such challenges and will render a final decision as to the validity of the certification no later than 60 days from its filing. Absent notice from the Bureau of any such deficiencies within 30 days of the filing of the certification, the certification of accelerated relocation will be deemed validated. (h) Delegated authority. § 27.1413 Relocation Coordinator. Link to an amendment published at 91 FR 48745, July 31, 2026. Link to an amendment published at 91 FR 48746, July 31, 2026. (a) Search committee. (1) The search committee should proceed by consensus; however, if a vote on selection of a Relocation Coordinator is required, it shall be by a supermajority (80%). (i) The search committee shall notify the Commission of its choice of Relocation Coordinator. (ii) The Wireless Telecommunications Bureau shall issue a Public Notice inviting comment on whether the entity selected satisfies the criteria established in paragraph (b) of this section and issue a final order announcing whether the criteria has been satisfied; (iii) Should the Wireless Telecommunications Bureau be unable to find the criteria have been satisfied, the selection process will start over and the search committee will submit a new proposed entity. (2) If eligible space station operators select a Relocation Coordinator, they shall be responsible for paying its costs. (3) In the event that the search committee fails to select a Relocation Coordinator and to notify the Commission by July 31, 2020, or in the case that at least 80% of accelerated relocation payments are not accepted (and thus accelerated relocation is not triggered): (i) The search committee will be dissolved without further action by the Commission. (ii) The Commission will initiate a procurement of a Relocation Coordinator to facilitate the transition. Specifically, the Office of the Managing Director will initiate the procurement, and the Wireless Telecommunications Bureau will take all other necessary actions to meet the accelerated relocation deadlines (to the extent applicable to any given operator) and the relocation deadline. (iii) In the case that the Wireless Telecommunications Bureau selects the Relocation Coordinator, overlay licensees will, collectively, pay for the services of the Relocation Coordinator and staff. The Relocation Coordinator shall submit its own reasonable costs to the Relocation Clearinghouse, who will then collect payments from overlay licensees. It shall also provide additional financial information as requested by the Bureau to satisfy the Commission's oversight responsibilities and/or agency specific/government-wide reporting obligations. (b) Relocation Coordinator criteria. (1) Coordinating the schedule for clearing the band; (2) Performing engineering analysis, as necessary to determine necessary earth station migration actions; (3) Assigning obligations, as necessary, for earth station migrations and filtering; (4) Coordinating with overlay licensees throughout the transition process; (5) Assessing the completion of the transition in each PEA and determining overlay licensees' ability to commence operations; and (6) Mediating scheduling disputes. (c) Relocation Coordinator duties. (1) Establish a timeline and take actions necessary to migrate and filter incumbent earth stations to ensure uninterrupted service during and following the transition. (2) Review the Transition Plans filed by all eligible space station operators and recommend any changes to those plans to the Commission to the extent needed to ensure a timely transition. (3) To the extent that incumbent earth stations are not accounted for in eligible space station operators' Transition Plans, the Relocation Coordinator must include those incumbent earth stations in an Earth Station Transition Plan. (i) May require each associated space station operator to file the information needed for such a plan with the Relocation Coordinator. (ii) Will describe and recommend the respective responsibility of each party for earth station migration obligations in the Earth Station Transition Plan and assist incumbent earth stations in transitioning including, for example, by installing filters or hiring a third party to install such filters to the extent necessary. (4) Coordinate its operations with overlay licensees. (5) Be responsible for receiving notice from earth station operators or other satellite customers of any disputes related to comparability of facilities, workmanship, or preservation of service during the transition and shall subsequently notify the Wireless Telecommunications Bureau of the dispute and provide recommendations for resolution. (6) Must make real time disclosures of the content and timing of and the parties to communications, if any, from or to applicants to participate in the competitive bidding, as defined by § 1.2105(c)(5)(i) of this chapter whenever the prohibition in § 1.2105(c) of this chapter applies to competitive bidding for licenses in the 3.7 GHz Service. (7) Incumbent space station operators must cooperate in good faith with the Relocation Coordinator throughout the transition. (d) Status reports. (e) Document requests. § 27.1414 Relocation Payment Clearinghouse. Link to an amendment published at 91 FR 48746, July 31, 2026. Link to an amendment published at 91 FR 48747, July 31, 2026. A Relocation Payment Clearinghouse shall be selected and serve to administer the cost-related aspects of the transition in a fair, transparent manner, pursuant to Commission rules and oversight, to mitigate financial disputes among stakeholders, and to collect and distribute payments in a timely manner for the transition of the 3700-4000 MHz band to the 3.7 GHz Service. (a) Selection process. (2) The search committee shall convene no later than June 22, 2020 and shall notify the Commission of the detailed selection criteria for the position of Relocation Payment Clearinghouse no later than June 1, 2020. Such criteria must be consistent with the qualifications, roles, and duties of the Relocation Payment Clearinghouse specified in this subpart. The Wireless Telecommunications Bureau (Bureau) is directed, on delegated authority, to issue a Public Notice notifying the public that the search committee has published criteria, outlining submission requirements, and providing the closing dates for the selection of the Relocation Payment Clearinghouse and source ( i.e., (3) The search committee should proceed by consensus; however, if a vote on selection of a Relocation Payment Clearinghouse is required, it shall be by a majority. (4) In the event that the search committee fails to select a Relocation Payment Clearinghouse and to notify the Commission by July 31, 2020, the search committee will be dissolved without further action by the Commission. In the event that the search committee fails to select a Clearinghouse and to notify the Commission by July 31, 2020, two of the nine members of the search committee will be dropped therefrom by lot, and the remaining seven members of the search committee shall select a Clearinghouse by majority vote by August 14, 2020. (5) During the course of the Relocation Payment Clearinghouse's tenure, the Commission will take such measures as are necessary to ensure timely compliance, including, should it become necessary, issuing subsequent public notices to select new Relocation Payment Clearinghouses(s). (b) Selection criteria. (i) Organizational conflicts of interest means that because of other activities or relationships with other entities, the Relocation Payment Clearinghouse, its contractors, or significant subcontractors are unable or potentially unable to render impartial services, assistance or advice; the Relocation Payment Clearinghouse's objectivity in performing its function is or might be otherwise impaired; or the Relocation Payment Clearinghouse might gain an unfair competitive advantage. (ii) Personal conflict of interest means a situation in which an employee, officer, or director of the Relocation Payment Clearinghouse, the Relocation Payment Clearinghouse's contractors or significant subcontractors has a financial interest, personal activity, or relationship that could impair that person's ability to act impartially and in the best interest of the transition when performing their assigned role, or is engaged in self-dealing. (2) The Relocation Payment Clearinghouse must be able to demonstrate that it has the requisite expertise to perform the duties required, which will include collecting and distributing relocation and accelerated relocation payments, auditing incoming and outgoing estimates, mitigating cost disputes among parties, and generally acting as clearinghouse. (3) The search committee should ensure that the Relocation Payment Clearinghouse meets relevant best practices and standards in its operation to ensure an effective and efficient transition. First, the Relocation Payment Clearinghouse should be required, in administering the transition, to: (i) Engage in strategic planning and adopt goals and metrics to evaluate its performance; (ii) Adopt internal controls for its operations; (iii) Utilize enterprise risk management practices; and (iv) Use best practices to protect against improper payments and to prevent fraud, waste and abuse in its handling of funds. The Relocation Payment Clearinghouse must be required to create written procedures for its operations, using the Government Accountability Office's Green Book to serve as a guide in satisfying such requirements. (4) The search committee must also ensure that the Relocation Payment Clearinghouse adopts robust privacy and data security best practices in its operations, given that it will receive and process information critical to ensuring a successful and expeditious transition. (i) When the prohibition in § 1.2105(c) of this chapter applies to competitive bidding for licenses in the 3.7 GHz service, the Relocation Payment Clearinghouse must make real time disclosures of the content and timing of and the parties to communications, if any, from or to applicants to participate in the competitive bidding, as defined by § 1.2105(c)(5)(i) of this chapter. (ii) The Relocation Payment Clearinghouse should also comply with, on an ongoing basis, all applicable laws and Federal Government guidance on privacy and information security requirements such as relevant provisions in the Federal Information Security Management Act, National Institute of Standards and Technology publications, and Office of Management and Budget guidance. (iii) The Relocation Payment Clearinghouse must hire a third-party firm to independently audit and verify, on an annual basis, the Relocation Payment Clearinghouse's compliance with privacy and information security requirements and to provide recommendations based on any audit findings; to correct any negative audit findings and adopt any additional practices suggested by the auditor; and to report the results to the Bureau. (c) Reports and information. e.g., (2) The Relocation Payment Clearinghouse shall provide to the Office of the Managing Director and the Wireless Telecommunications Bureau, by March 1 of each year, an audited statement of funds expended to date, including salaries and expenses of the Clearinghouse. (3) The Relocation Clearing House shall provide to the Wireless Telecommunications Bureau additional information upon request. § 27.1415 Documentation of expenses. Link to an amendment published at 91 FR 48747, July 31, 2026. Parties seeking reimbursement of compensable relocation costs must document their actual expenses and the Relocation Payment Clearinghouse, or a third-party on behalf of the Relocation Payment Clearinghouse, may conduct audits of entities that receive reimbursements. Entities receiving reimbursements must make available all relevant documentation upon request from the Relocation Payment Clearinghouse or its contractor. § 27.1416 Reimbursable costs. Link to an amendment published at 91 FR 48747, July 31, 2026. (a) Determining reimbursable costs. (b) Payment procedures. § 27.1417 Reimbursement fund. Link to an amendment published at 91 FR 48748, July 31, 2026. The Relocation Payment Clearinghouse will establish and administer an account that will fund the costs for the transition of this band to the 3.7 GHz Service after an auction for the 3.7 GHz Service concludes. Licensees in the 3.7 GHz Service shall pay their pro rata pro rata pro rata § 27.1418 Payment obligations. Link to an amendment published at 91 FR 48748, July 31, 2026. (a) Each eligible space station operator is responsible for the payment of its own satellite transition costs until the auction winners have been announced. (b) Licensees in the 3.7 GHz Service shall pay their pro rata (1) The reasonable costs of the Relocation Payment Clearinghouse and, in the event the Wireless Telecommunications Bureau selects the Relocation Coordinator, the services of the Relocation Coordinator and its staff; (2) The actual relocation costs, provided that they are not unreasonable, for eligible space station operators and incumbent fixed service licensees; the actual transition costs, provided they are not unreasonable, associated with the necessary migration and filtering of incumbent earth stations; (3) Any lump sum payments, if elected by incumbent earth station operators in lieu of actual relocation costs; and (4) Specified accelerated relocation payments for space station operators that clear on an accelerated timeframe. Licensees in the 3.7 GHz Service shall be responsible for the full costs of space station transition, the Relocation Payment Clearinghouse, and, if selected and established by the Wireless Telecommunications Bureau, the Relocation Coordinator, based on their pro rata pro rata (c) Following the auction, and every six months until the close of the transition, licensees in the 3.7 GHz Service shall submit their portion of estimated transition costs to a reimbursement fund, and the Relocation Payment Clearinghouse will reimburse parties incurring transition costs. If actual costs exceed estimated costs, the Relocation Payment Clearinghouse shall perform a true-up for additional funds from 3.7 GHz Service licensees. (d) If 3.7 GHz band license is relinquished to the Commission prior to all relocation cost reimbursements and accelerated relocation payments being paid, the remaining payments will be distributed among other similarly situated 3.7 GHz band licensees. If a new license is issued for the previously relinquished rights prior to final payments becoming due, the new 3.7 GHz band licensee will be responsible for the same pro rata § 27.1419 Lump sum payment for earth station opt out. Link to an amendment published at 91 FR 48748, July 31, 2026. The Wireless Telecommunications Bureau shall announce a lump sum that will be available per each incumbent earth station that elects to opt out from the formal relocation process, per § 27.1412(e), as well as the process for electing lump sum payments. Incumbent earth station owners must make the lump sum payment election no later than 30 days after the Bureau announces the lump sum payment amounts, and must indicate whether each incumbent earth station for which it elects the lump sum payment will be transitioned to the upper 200 megahertz in order to maintain C-band services or will discontinue C-band services. § 27.1420 Cost-sharing formula. Link to an amendment published at 91 FR 48748, July 31, 2026. (a) For space station transition and Relocation Payment Clearinghouse costs, and in the event the Wireless Telecommunications Bureau selects a Relocation Coordinator pursuant to § 27.1413(a), Relocation Coordinator costs, the pro rata P N RO pro rata RC (b) For incumbent earth stations and fixed service incumbent licensee transition costs, a flexible-use licensee's pro rata pro rata I N RC (c) For the Phase I accelerated relocation payments, the pro rata P M RO pro rata A1. (d) For Phase II accelerated relocation payments, the pro rata P N RO pro rata A2. § 27.1421 Disputes over costs and cost-sharing. Link to an amendment published at 91 FR 48749, July 31, 2026. (a) Parties disputing a cost estimate, cost invoice, or payment or cost-sharing obligation must file an objection with the Relocation Payment Clearinghouse. (b) The Relocation Payment Clearinghouse may mediate any disputes regarding cost estimates or payments that may arise in the course of band reconfiguration; or refer the disputant parties to alternative dispute resolution fora. (1) Any dispute submitted to the Relocation Payment Clearinghouse, or other mediator, shall be decided within 30 days after the Relocation Payment Clearinghouse has received a submission by one party and a response from the other party. (2) Thereafter, any party may seek expedited non-binding arbitration, which must be completed within 30 days of the recommended decision or advice of the Relocation Payment Clearinghouse or other mediator. (3) The parties will share the cost of this arbitration if it is before the Relocation Payment Clearinghouse. (c) Should any issues still remain unresolved, they may be referred to the Bureau within ten days of recommended decision or advice of the Relocation Payment Clearinghouse or other mediator and any decision of the Relocation Payment Clearinghouse can be appealed to the Chief of the Bureau. (1) When referring an unresolved matter, the Relocation Payment Clearinghouse shall forward the entire record on any disputed issues, including such dispositions thereof that the Relocation Payment Clearinghouse has considered. (2) Upon receipt of such record and advice, the Bureau will decide the disputed issues based on the record submitted. The Bureau is directed to resolve such disputed issues or designate them for an evidentiary hearing before an Administrative Law Judge. If the Bureau decides an issue, any party to the dispute wishing to appeal the decision may do so by filing with the Commission, within ten days of the effective date of the initial decision, a Petition for de novo (3) Parties seeking de novo § 27.1422 Accelerated relocation payment. Link to an amendment published at 91 FR 48749, July 31, 2026. Link to an amendment published at 91 FR 48750, July 31, 2026. (a) Eligible space station operators that meet the applicable early-clearing benchmark(s), as confirmed in their Certification of Accelerated Relocation set-forth in § 27.1412(g), will be eligible for their respective accelerated relocation payment. (b) The Relocation Payment Clearinghouse will distribute the accelerated relocation payments accordingly: Table 1 to Paragraph (b) Payment Phase I Phase II Intelsat $4,865,366,000 $1,197,842,000 $3,667,524,000 SES 3,968,133,000 976,945,000 2,991,188,000 Eutelsat 506,978,000 124,817,000 382,161,000 Telesat 344,400,000 84,790,000 259,610,000 Star One 15,124,000 3,723,000 11,401,000 Totals 9,700,001,000 2,388,117,000 7,311,884,000 (c) The Relocation Payment Clearinghouse shall promptly notify 3.7 GHz Service licensees following validation of the certification of accelerated relocations as set-forth in Section 27.1412(g). 3.7 GHz Service licensees shall pay the accelerated relocation payments to the Clearinghouse within 60 days of the notice that eligible space station operators have met their respective accelerated clearing benchmark. The Clearinghouse shall disburse accelerated relocation payments to relevant space station operators within seven days of receiving the payment from overlay licensees. (d) For eligible space station operators that fail to meet either the Phase I or Phase II benchmarks as of the relevant accelerated relocation deadline, the accelerated relocation payment will be reduced according to the following schedule of declining accelerated relocation payments for the six months following the relevant deadline: Table 2 to Paragraph (d) Date of completion Incremental Accelerated By Deadline 100 1-30 Days Late 5 95 31-60 Days Late 5 90 61-90 Days Late 10 80 91-120 Days Late 10 70 121-150 Days Late 20 50 151-180 Days Late 20 30 181+ Days Late 30 0 § 27.1423 Protection of incumbent operations. Link to an amendment published at 91 FR 48750, July 31, 2026. (a) To protect incumbent earth stations from out-of-band emissions from fixed stations, base stations and mobiles, the power flux density (PFD) of any emissions within the 4000-4200 MHz band must not exceed −124 dBW/m 2 (b) To protect incumbent earth stations from blocking, the power flux density (PFD) of any emissions within the 3700-3980 MHz band must not exceed −16 dBW/m 2 (c) All 3.7 GHz Service licensees, prior to initiating operations from any base or fixed station, must coordinate cochannel frequency usage with all incumbent Telemetry, Tracking, and Command (TT&C) earth stations within a 70 km radius. The licensee must ensure that the aggregated power from its operations meets an interference to noise ratio (I/N) of −6 dB to the TT&C earth station receiver. A base station's operation will be defined as cochannel when any of the 3.7 GHz Service licensee's authorized frequencies are separated from the center frequency of the TT&C earth station by less than 150% of the maximum emission bandwidth in use by the TT&C earth station. (d) All 3.7 GHz Service licensees operating on an adjacent channel to an incumbent TT&C earth station must ensure that the aggregated power from its operations meets an interference to noise ratio (I/N) of −6 dB to the TT&C earth station receiver. (e) To protect incumbent TT&C earth stations from blocking, the power flux density (PFD) of any emissions within the 3700-3980 MHz band must not exceed −16 dBW/m 2 § 27.1424 Agreements between 3.7 GHz Service licensees and C-Band earth station operators. Link to an amendment published at 91 FR 48750, July 31, 2026. The PFD limits in § 27.1423 may be modified by the private agreement of licensees of 3.7 GHz Service and entities operating earth stations in the 4000-4200 MHz band or TT&C operations in the 3700-3980 MHz band. A licensee of the 3.7 GHz Service who is a party to such an agreement must maintain a copy of the agreement in its station files and disclose it, upon request, to prospective license assignees, transferees, or spectrum lessees, and to the Commission. Subpart P—Regulations Governing Licensing and Use of 900 MHz Broadband Service in the 896-901 MHz and 935-940 MHz Bands Source: 85 FR 43134, July 16, 2020, unless otherwise noted. § 27.1500 Scope. This subpart sets out the regulations governing the licensing and operations of 900 MHz broadband systems operating in the 897.5-900.5/936.5-939.5 MHz bands or in the 896-901/935-940 MHz bands. It includes eligibility requirements and operational and technical standards for stations licensed in these bands. It also supplements the rules regarding application procedures contained in part 1, subpart F of this chapter. The rules in this subpart are to be read in conjunction with the applicable requirements contained elsewhere in this part; however, in case of conflict, the provisions of this subpart shall govern with respect to licensing and operation in these frequency band segments. [91 FR 15910, Mar. 31, 2026] § 27.1501 Definitions. 3/3 900 MHz broadband. 3/3 900 MHz broadband licensee. 3/3 900 MHz broadband segment. i.e., 5/5 900 MHz broadband. 5/5 900 MHz broadband frequency range. i.e., 5/5 900 MHz broadband licensee. 900 MHz broadband. 900 MHz broadband licensee. An entity that holds either a 3/3 900 MHz broadband license or a 5/5 900 MHz broadband license issued pursuant to this subpart. 900 MHz narrowband segment. i.e., Complex system. County. Covered incumbent. Eligibility certification. License area. Power spectral density (PSD). e.g., Site-channel. Transition plan. Transitioned market. [91 FR 15910, Mar. 31, 2026] § 27.1502 [Reserved] § 27.1503 Broadband license eligibility and application requirements. (a) Eligibility 3/3 900 MHz broadband license. (i) Hold the licenses for more than 50% of the total amount of licensed 900 MHz SMR (site-based or geographically licensed) and B/ILT (site-based) spectrum for the relevant county, including credit for spectrum included in an application filed with the Commission on or after March 14, 2019, to relocate, negotiate cancellation of licenses of, or acquire spectrum held by covered incumbents; and (ii) Meet a threshold of at least 90% of licensed channels in the 3/3 900 MHz broadband segment by: (A) Holding spectrum in the 3/3 900 MHz broadband segment, and/or (B) reaching an agreement to clear through relocation of or cancellation of the license(s) or acquisition of spectrum held by covered incumbents, including credit for spectrum included in an application filed with the Commission on or after March 14, 2019; and/or (C) demonstrating how it will provide interference protection to covered incumbents' site-channels in the county and within 70 miles of the county boundary, and geographically licensed channels where the license area completely or partially overlaps the county. (iii) The applicant for a 3/3 900 MHz broadband license may use its current holdings in the 900 MHz narrowband segment to relocate covered incumbents. Spectrum used for the purpose of relocating incumbents may not exceed the incumbents' current spectrum holdings in the relevant county, unless additional channels are necessary to achieve equivalent coverage and/or capacity. (2) 5/5 900 MHz broadband license. (i) Hold the licenses for more than 50% of the total amount of licensed 900 MHz spectrum for the relevant county, including credit for spectrum included in an application filed with the Commission on or after March 14, 2019, to relocate, negotiate cancellation of licenses of, or acquire spectrum held by covered incumbents; (ii) As it pertains to the 897.5-900.5 MHz and 936.5-939.5 MHz bands, either: (A) Hold a 3/3 900 MHz broadband license in the relevant county; or (B) Meet a threshold of at least 90% of combined licensed channels by: ( 1 ( 2 ( 3 (iii) As it pertains to the 896-897.5/935-936.5 MHz and 900.5-901/939.5-940 MHz bands, demonstrate that it has reached an agreement to clear through relocation of or cancellation of the license(s) or acquisition of spectrum held by all covered incumbents, or demonstrate how it will provide harmful interference protection to all covered incumbents holding site-based licenses in the county and within 70 miles of the county boundary and geographically licensed channels where the license area completely or partially overlaps the county. (3) Interference protection. (i) Protect site-based covered incumbents through compliance with minimum spacing criteria set forth in § 90.621(b) of this chapter; (ii) Protect site-based covered incumbents through new or existing letters of concurrence agreeing to lesser base station separations as set forth in § 90.621(b) of this chapter; and/or (iii) Protect geographically based covered incumbent(s) through a private contractual agreement. (4) Complex system site protection. (b) Application. (2) An applicant for a 900 MHz broadband license must submit with its application an Eligibility Certification that: (i) Lists the licenses the applicant holds in the 900 MHz band to demonstrate that it holds the licenses for more than 50% of the total licensed 900 MHz spectrum in the relevant county to meet the requirements outlined in paragraph (a)(1)(i) or (a)(2)(i) of this section. Spectrum included in an application filed with the Commission on or after March 14, 2019, to relocate, negotiate cancellation of licenses of, or acquire spectrum held by covered incumbents will be counted toward the total licensed spectrum held by the applicant. (ii) States that the applicant has filed a Transition Plan detailing how it meets the requirements outlined in paragraph (a)(1)(ii) or (a)(2)(ii) of this section and, if applicable, how it meets the requirements outlined in paragraph (a)(2)(iii) of this section. (3) An applicant for a 900 MHz broadband license must submit with its application a Transition Plan that provides: (i) A showing of one or more of the following: (A) Agreement by covered incumbents to relocate from the 3/3 900 MHz broadband segment (for a 3/3 broadband license) or the 896-901 and 935-940 MHz bands (for a 5/5 broadband license), as applicable; (B) Protection of site-based covered incumbents through compliance with minimum spacing criteria; (C) Protection of site-based covered incumbents through new or existing letters of concurrence agreeing to lesser base station separations; (D) Protection of geographically-based covered incumbents through private contractual agreements; and/or (E) Evidence that it holds licenses for the site-channels and/or geographically licensed channels. (ii) Descriptions of the agreements outlined in paragraphs (a)(1)(ii) and (a)(2)(ii) and (iii) of this section, if applicable. (iii) Descriptions in detail of all information and actions necessary to accomplish the realignment, as follows: (A) The applications that the parties to the agreements will file in order to relocate licensees or, in the case of 3/3 broadband licenses, to relocate or repack licensees in the 900 MHz narrowband segments; (B) A description of how the applicant will provide interference protection to, and/or relocate or acquire spectrum held by covered incumbents, as outlined in paragraphs (a)(1)(ii) and (a)(2)(ii) and (iii) of this section, as applicable. (C) Any rule waivers or other actions necessary to implement an agreement with a covered incumbent; and (D) Such additional information as may be required. (iv) A certification from an FCC-certified frequency coordinator that the Transition Plan's representations can be implemented consistent with Commission rules. The certification must establish that the relocations proposed therein take into consideration all relevant covered incumbents and are consistent with the existing part 90 interference protection criteria if the covered incumbent is site-based, and include any private contractual agreements between the prospective broadband licensee and a geographically-licensed covered incumbent. (4) Applicants seeking to transition multiple counties may simultaneously file a single Transition Plan with each of its county-based applications. (c) Anti-windfall provisions. (2) If the applicant relinquishes less than six megahertz of spectrum for a 3/3 900 MHz broadband license or less than ten megahertz of spectrum for a 5/5 900 MHz broadband license in accordance with paragraph (c)(1) of this section, then the applicant must remit an anti-windfall payment prior to the grant of the 900 MHz broadband license. Payment must be made through a monetary payment to the general fund of the U.S. Treasury. (3) For the purpose of calculating the windfall payment, if an applicant relinquished more than six megahertz of narrowband spectrum when it applied for its 3/3 900 MHz broadband license, then that 3/3 licensee may claim credit for the excess spectrum in its application for a 5/5 MHz broadband license for the same county. Any excess spectrum credit not claimed on its initial application is forfeited. [85 FR 43134, July 16, 2020, as amended at 91 FR 15910, Mar. 31, 2026; 91 FR 23171, Apr. 30, 2026] § 27.1504 Mandatory relocation. (a) Subject to paragraph (b) of this section, 900 MHz broadband licensees may require mandatory relocation of covered incumbents from the 897.5-900.5 MHz and 936.5-939.5 MHz bands as follows: remaining site-channels in a given county or within 70 miles of the county boundary, and geographically licensed channels where the license area completely or partially overlaps the county, that were not covered by § 27.1503(a)(1)(ii) or 27.1503(a)(2)(ii). (b) Complex systems are exempt from mandatory relocation. To qualify as exempt from mandatory relocation, a complex system must have at least one site (of its 45 or more functionally integrated sites) located within the county license area or within 70 miles of the county boundary. (c) A broadband licensee seeking to relocate a covered incumbent pursuant to this section is required to pay all reasonable relocation costs, including providing the relocated covered incumbent with comparable facilities. To be comparable, the replacement system provided to a covered incumbent during a mandatory relocation must be at least equivalent to the existing 900 MHz system with respect to the following four factors: (1) System; (2) Capacity; (3) Quality of service; and (4) Operating costs. (d) Having met the 90% success threshold referenced in § 27.1503, a 900 MHz broadband licensee seeking to trigger the mandatory relocation process shall serve notice on all applicable covered incumbents and file such notice in ULS as a pleading to the relevant call sign(s). (e) Following the service of notice, a 900 MHz broadband licensee may request information from the covered incumbent reasonably required to craft its offer of comparable facilities. (f) We expect all parties to negotiate with the utmost “good faith” in the negotiation process. Factors relevant to a “good-faith” determination include: (1) Whether the party responsible for paying the cost of band reconfiguration has made a bona fide (2) The steps the parties have taken to determine the actual cost of relocation to comparable facilities; and (3) Whether either party has unreasonably withheld information, essential to the accurate estimation of relocation costs and procedures, requested by the other party. (g) A party seeking Commission resolution of a dispute must submit the request in writing to the Chief, Wireless Telecommunications Bureau, and file such notice in ULS as a pleading to the relevant call sign(s), including: (1) The name, address, telephone number, and email address of the 900 MHz broadband licensee or covered incumbent making the allegation; (2) The name of the 900 MHz broadband licensee or covered incumbent about which the allegation is made; (3) A complete statement of the facts supporting the broadband licensee's or incumbent's claim; and (4) The specific relief sought. (h) If an incumbent fails to negotiate in good faith, its facilities may be mandatorily relocated, and its license modified accordingly by the Commission pursuant to section 316 of the Act. If the Wireless Telecommunications Bureau finds bad faith on the part of the broadband licensee, the broadband licensee may lose the right to relocate the incumbent or the Wireless Telecommunications Bureau may refer the matter to the Enforcement Bureau for action (which could include a range of sanctions, such as imposition of forfeitures). [85 FR 43134, July 16, 2020, as amended at 91 FR 15911, Mar. 31, 2026] § 27.1505 Performance requirements for 900 MHz broadband licenses. (a) 900 MHz broadband licensees shall demonstrate compliance with performance requirements by filing a construction notification with the Commission, within 15 days of the expiration of the applicable benchmark, in accordance with the provisions set forth in § 1.946(d) of this chapter. (1) The licensee must certify whether it has met the applicable performance requirements. The licensee must file a description and certification of the areas for which it is providing service. The construction notifications must include electronic coverage maps and supporting technical documentation regarding the type of service it is providing for each licensed area within its service territory and the type of technology used to provide such service, and certify the accuracy of such documentation. Supporting documentation must include the assumptions used to create the coverage maps, including the propagation model and the signal strength necessary to provide reliable service with the licensee's technology. (2) To demonstrate compliance with the population coverage requirement, licensees shall use the most recently available decennial U.S. Census Bureau data at the time of measurement and shall base their measurements of population served on areas no larger than the Census Tract level. The population within a specific Census Tract (or other acceptable identifier) will be deemed served by the licensee only if it provides reliable signal coverage to and offers service within the specific Census Tract (or other acceptable identifier). To the extent the Census Tract (or other acceptable identifier) extends beyond the boundaries of a license area, a licensee with authorizations for such areas may include only the population within the Census Tract (or other acceptable identifier) towards meeting the performance requirement of a single, individual license. (b) Coverage requirements. (1) For a 3/3 broadband license, or a 5/5 broadband license that is not issued in exchange for a 3/3 900 MHz broadband license, the licensee is subject to the following benchmarks: (i) Interim performance requirement. (A) Provide reliable signal coverage to at least 45% of the population in its license area; or (B) Demonstrate that it provides reliable signal coverage for at least 25% of the geographic license area. (ii) Final performance requirement. (A) Provide reliable signal coverage to at least 80% of the population in its license area; or (B) Demonstrate that it provides reliable signal coverage for at least 50% of the geographic license area. (2) For a 5/5 900 MHz broadband license issued in exchange for a 3/3 900 MHz broadband license prior to the 3/3 broadband license interim performance deadline, the licensee is subject to the following benchmarks: (i) Interim performance requirement. (A) Provide reliable signal coverage to at least 45% of the population in its license area; or (B) Demonstrate that it provides reliable signal coverage for at least 25% of the geographic license area. (ii) Final performance requirement. (A) Provide reliable signal coverage to at least 80% of the population in its license area; or (B) Demonstrate that it provides reliable signal coverage for at least 50% of the geographic license area. (3) For a 5/5 900 MHz broadband license issued in exchange for a 3/3 900 MHz broadband license after the 3/3 broadband licensee has met its applicable interim performance deadline but prior to its applicable final performance deadline for the 3/3 license, the licensee will be subject to the following final performance requirement: within two years from the date of the applicable final performance deadline for the 3/3 broadband license, a 5/5 broadband licensee shall offer broadband service and either: (i) Provide reliable signal coverage to at least 80% of the population in its license area; or (ii) Demonstrate that it provides reliable signal coverage for at least 50% of the geographic license area. Such licensee will not be subject to an interim performance requirement for the 5/5 broadband license. (4) For a 5/5 900 MHz broadband license issued in exchange for a 3/3 900 MHz broadband license after the 3/3 broadband licensee has met its applicable final performance requirement, the 5/5 broadband licensee will be subject to the following final performance requirement: within two years from the date of grant of the 5/5 broadband license, a 5/5 broadband licensee shall offer broadband service and either: (i) Provide reliable signal coverage to at least 80% of the population in its license area; or (ii) Demonstrate that it provides reliable signal coverage for at least 50% of the geographic license area. Such licensee will not be subject to an interim performance requirement for the 5/5 broadband license. (c) Penalties. i.e., (ii) Except in cases where a licensee received its 5/5 900 MHz broadband license in exchange for a 3/3 900 MHz broadband license, a 5/5 broadband licensee that fails to meet its applicable interim performance benchmark will be required to meet its final performance benchmark two years sooner ( i.e., (iii) A 5/5 broadband licensee that received its 5/5 license in exchange for a 3/3 900 MHz broadband license and that fails to meet its applicable interim performance benchmark, as described in paragraph (b)(2)(i) or (ii) of this section, will be subject to a revised final performance deadline that is accelerated by two years, and its applicable license term will be reduced by two years. (2) If a 900 MHz broadband licensee fails to meet the final performance benchmark, its authorization for that license area will terminate automatically without Commission action. (d) Continuity of operations. [85 FR 43134, July 16, 2020, as amended at 91 FR 15912, Mar. 31, 2026; 91 FR 23172, Apr. 30, 2026] § 27.1506 Frequencies. The 897.5-900.5 MHz and 936.5-939.5 MHz band segments are available for licensing with an authorized bandwidth up to 3 megahertz paired channels. The 896-901 MHz and 935-940 MHz bands are available for licensing with an authorized bandwidth up to 5 megahertz paired channels. The 897.5-900.5 MHz band segment or 896-901 MHz band segment, as applicable, must only be used for uplink transmissions. The 936.5-939.5 MHz band segment or 935-940 MHz band segment, as applicable, must only be used for downlink transmissions. [91 FR 15912, Mar. 31, 2026] § 27.1507 Effective radiated power limits for 900 MHz broadband systems. (a) Maximum ERP. (1) General limit. (ii) Provided that they also comply with paragraphs (b) and (c) of this section, licensees are permitted to operate base and repeater stations with up to a maximum ERP of 1000 watts/megahertz power spectral density (PSD) per sector and an antenna height of 304 m height above average terrain (HAAT), except that antenna heights greater than 304 m HAAT are permitted if power levels are reduced below 1000 watts/megahertz ERP in accordance with Table 2 of this section. (2) Rural areas. (i) The ERP for base and repeater stations must not exceed 800 watts/megahertz power spectral density (PSD) per sector and an antenna height of 304 m height above average terrain (HAAT), except that antenna heights greater than 304 m HAAT are permitted if power levels are reduced below 800 watts/megahertz ERP in accordance with Table 3 of this section. (ii) Provided that they also comply with paragraphs (b) and (c) of this section, base and repeater stations may operate with up to a maximum ERP of 2000 watts/megahertz power spectral density (PSD) per sector and an antenna height of 304 m height above average terrain (HAAT), except that antenna heights greater than 304 m HAAT are permitted if power levels are reduced below 2000 watts/megahertz ERP in accordance with Table 4 of this section. (3) Mobile, control and auxiliary test stations. (4) Portable stations. (b) Power flux density (PFD). 2 (c) Power measurement. (1) A Commission-approved average power technique (see FCC Laboratory's Knowledge Database); or (2) For purposes of this section, peak transmit power must be measured over an interval of continuous transmission using instrumentation calibrated in terms of an rms-equivalent voltage. The measurement results shall be properly adjusted for any instrument limitations, such as detector response times, limited resolution bandwidth capability when compared to the emission bandwidth, sensitivity, etc., so as to obtain a true peak measurement for the emission in question over the full bandwidth of the channel. (d) PAR limit. (e) Height-power limit. Table 1 to § 27.1507—Permissible Power and Antenna Heights for Base Stations and Repeaters Permitted To Transmit With Up to 400 Watts/Megahertz Antenna height (AAT) Effective radiated Above 1372 (4500) 26 Above 1220 (4000) To 1372 (4500) 28 Above 1067 (3500) To 1220 (4000) 30 Above 915 (3000) To 1067 (3500) 40 Above 763 (2500) To 915 (3000) 56 Above 610 (2000) To 763 (2500) 80 Above 458 (1500) To 610 (2000) 140 Above 305 (1000) To 458 (1500) 240 Up to 305 (1000) 400 Table 2 to § 27.1507—Permissible Power and Antenna Heights for Base Stations and Repeaters Permitted To Transmit With Up to 1000 Watts/Megahertz Antenna height (AAT) Effective radiated Above 1372 (4500) 65 Above 1220 (4000) To 1372 (4500) 70 Above 1067 (3500) To 1220 (4000) 75 Above 915 (3000) To 1067 (3500) 100 Above 763 (2500) To 915 (3000) 140 Above 610 (2000) To 763 (2500) 200 Above 458 (1500) To 610 (2000) 350 Above 305 (1000) To 458 (1500) 600 Up to 305 (1000) 1000 Table 3 to § 27.1507—Permissible Power and Antenna Heights for Base Stations and Repeaters Permitted To Transmit With Up to 800 Watts/Megahertz Antenna height (AAT) Effective radiated Above 1372 (4500) 52 Above 1220 (4000) To 1372 (4500) 56 Above 1067 (3500) To 1220 (4000) 60 Above 915 (3000) To 1067 (3500) 80 Above 763 (2500) To 915 (3000) 112 Above 610 (2000) To 763 (2500) 160 Above 458 (1500) To 610 (2000) 280 Above 305 (1000) To 458 (1500) 480 Up to 305 (1000) 800 Table 4 to § 27.1507—Permissible Power and Antenna Heights for Base Stations and Repeaters Permitted To Transmit With Up to 2000 Watts/Megahertz Antenna height (AAT) Effective radiated Above 1372 (4500) 130 Above 1220 (4000) To 1372 (4500) 140 Above 1067 (3500) To 1220 (4000) 150 Above 915 (3000) To 1067 (3500) 200 Above 763 (2500) To 915 (3000) 280 Above 610 (2000) To 763 (2500) 400 Above 458 (1500) To 610 (2000) 700 Above 305 (1000) To 458 (1500) 1200 Up to 305 (1000) 2000 § 27.1508 Field strength limit. The predicted or measured median field strength must not exceed 40 dBµV/m at any given point along the geographic license boundary, unless the affected licensee agrees to a different field strength. This value applies to both the initially offered service areas and to partitioned service areas. § 27.1509 Emission limits. The power of any emission outside a licensee's frequency band(s) of operation shall be attenuated below the transmitter power (P) in watts by at least the following amounts: (a) For 900 MHz broadband operations in the 896-901 MHz band, by at least 43 + 10 log (P) dB. (b) For 900 MHz broadband operations in the 935-940 MHz band, by at least 50 + 10 log (P) dB. (c) Compliance with the provisions of paragraphs (a) and (b) of this section is based on the use of measurement instrumentation employing a resolution bandwidth of 100 kHz or greater. However, in the 100 kHz bands immediately outside and adjacent to the licensee's band, a resolution bandwidth of at least 1 percent of the emission bandwidth of the fundamental emission of the transmitter may be employed. The emission bandwidth is defined as the width of the signal between two points, one below the carrier center frequency and one above the carrier center frequency, outside of which all emissions are attenuated at least 26 dB below the transmitter power. (d) The measurements of emission power can be expressed in peak or average values, provided they are expressed in the same parameters as the transmitter power. (e) When an emission outside of the authorized bandwidth causes harmful interference, the Commission may, at its discretion, require greater attenuation than specified in this section. [85 FR 43134, July 16, 2020, as amended at 91 FR 15912, Mar. 31, 2026] § 27.1510 Unacceptable interference to narrowband 900 MHz licensees from 900 MHz broadband licensees. See 47 CFR 90.672. Subpart Q—3.45 GHz Service (3450-3550 MHz) Source: 86 FR 17954, Apr. 7, 2021, unless otherwise noted. § 27.1600 3450-3550 MHz band subject to competitive bidding. Mutually exclusive initial applications for 3450-3550 MHz band licenses are subject to competitive bidding. The general competitive bidding procedures set forth in 47 CFR part 1, subpart Q, will apply unless otherwise provided in this subpart. § 27.1601 Designated entities in the 3450-3550 MHz band. (a) Eligibility for small business provisions Definitions Small business. (ii) Very small business. (2) Bidding credits. (b) Eligibility for rural service provider bidding credit. § 27.1602 Incumbent Federal operations. Regarding incumbent Federal operations in the 3450-3550 MHz band, 3.45 GHz Service licensees must comply with footnote US431B of the Table of Frequency Allocations in 47 CFR 2.106. § 27.1603 Coordination procedures. (a) Coordination requirement. (b) Informal discussions. (c) Formal coordination. (d) Initiation, timing, and affirmative concurrence. (e) Submission information. i.e., (f) Coordination analysis. (g) Interference resolution process. §§ 27.1604-27.1605 [Reserved] § 27.1606 Aggregation of 3450-3550 MHz band licenses. (a) 3.45 GHz Service licensees may aggregate up to 40 megahertz of 3450-3550 MHz band licenses across both license categories in any service area at any given time for four years after the close of the auction. After four years post-auction, no such aggregation limit on 3450-3550 MHz licenses shall apply. (b) The criteria in § 20.22(b) of this chapter will apply in order to attribute partial ownership and other interests for the purpose of applying the aggregation limit in paragraph (a) of this section. § 27.1607 Information sharing for time division duplex synchronization. (a) 3.45 GHz Service licensees must provide information to requesting Citizens Broadband Radio Service (part 96 of this chapter) operators to enable time division duplex (TDD) synchronization. Negotiations over the information must be conducted in good faith, with the goal of enabling synchronization between the relevant systems. (1) A Citizens Broadband Radio Service operator, whether a Priority Access Licensee or a General Authorized Access user (§ 96.1(b) of this chapter), may request information from a 3.45 GHz Service licensee to enable cross-service TDD synchronization if it provides service, or intends to provide service, in the same or adjacent geographic area as a 3.45 GHz Service licensee. (2) Upon request by an eligible Citizens Broadband Radio Service operator, the 3.45 GHz Service licensee must provide sufficient technical information to allow the Citizens Broadband Radio Service operator to synchronize its system with the 3.45 GHz band system. The 3.45 GHz Service licensee must keep this information current if its network operations change. (b) 3.45 GHz Service licensees are under no obligation to make any changes to their operations or proposed operations to enable TDD synchronization.

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