{"data":{"id":"us/47-cfr-80.371","jurisdiction":"us","citation":"47 CFR 80.371","heading":"Public correspondence frequencies.","body":"This section describes the radiotelephony working frequencies assignable to ship and public coast stations.\n(a) Working frequencies in the 2000-4000 kHz band. The following table describes the working carrier frequency pairs in the 2000-4000 kHz band.\nWorking frequency pairs in the 2000-4000 kHz band\nRegion Carrier frequency (kHz)\nShip transmit Coast transmit\nEast Coast: 2031.5 2490.0\n2118.0 1 2514.0\n2126.0 2522.0\n2142.0 2538.0\n2166.0 2558.0\n2198.0 2590.0\n2366.0 2450.0\n2382.0 5 2482.0\n2390.0 2566.0\n2400.0 2400.0\n2406.0 2442.0\n2406.0 4 2506.0\nWest Coast: 2003.0 2450.0\n2009.0 2442.0\n2009.0 2566.0\n2031.5 2566.0\n2126.0 2522.0\n2206.0 2598.0\n2382.0 2466.0\n2406.0 2506.0\n2430.0 5 2482.0\nGulf Coast: 2009.0 2466.0\n2134.0 2530.0\n2142.0 2538.0\n1 2158.0 1 2550.0\n2166.0 2558.0\n2206.0 2598.0\n2366.0 2450.0\n2382.0 5 2482.0\n2430.0 2572.0\n2458.0 2506.0\nGreat Lakes 2: 2118.0 2514.0\n2158.0 2550.0\n2206.0 2582.0\nAlaska 2131.0 5 2309.0\n2134.0 2312.0\n2237.0 2397.0\n2240.0 2400.0\nHawaii 2134.0 2530.0\nCaribbean: 2009.0 2506.0\n3 2086.0 2585.0\n2134.0 2530.0\nGuam 2009.0 2506.0\n1 Unlimited hours of use from December 15 to April 1 and day only from April 1 to December 15. Harmful interference must not be caused to any station in the Great Lakes region.\n2 In the Great Lakes region 2206 kHz is not available for transmission to U.S. ships except in the case of distress. U.S. coast stations in the Great Lakes area may use 2514, 2550 and 2582 kHz on a shared basis with coast stations of Canada. Except in the case of distress, the frequency 2550 kHz must not be used for transmission to ship stations of Canada since the associated ship station transmit frequency 2158 kHz is not available to Canadian ship stations for transmission and 2582 kHz must not be used for public correspondence transmissions to U.S. ship stations since the associated ship transmit frequency 2206 kHz is not available to U.S. ship stations for transmissions except in the case of distress.\n3 Limited to a peak envelope power of 150 watts.\n4 Harmful interference must not be caused to any coast station in the Caribbean region.\n5 But see section 80.373(c)(3) of this chapter.\n(b) Working frequencies in the 4000-27500 kHz band. This paragraph describes the working carrier frequencies in the 4000-27500 kHz band. With respect to frequencies that are assignable in more than one geographical area, once the frequency is assigned to one licensee, any subsequent license will be authorized on a secondary, non-interference basis with respect to the incumbent license's existing operation. If the first licensee later seeks authorization to operate in an additional geographic area, such authorization will be on a secondary, non-interference basis to other co-channel licensees.\n(1) The following table specifies the carrier frequencies available for assignment to public coast stations. The paired ship frequencies are available for use by authorized ship stations. The specific frequency assignment available to public coast stations for a particular geographic area is indicated by an “x” under the appropriate column. The allotment areas are in accordance with the “Standard Defined Areas” as identified in the International Radio Regulations, Appendix 25 Planning System, and indicated in the preface to the International Frequency List (IFL).\nWorking Carrier Frequency Pairs in the 4000-27500 kHz Band\nChannel Ship transmit Coast transmit USA-E USA-W USA-S USA-C VIR HWA ALS PTR GUM\n401 4065 4357 x x x x\n403 4071 4363 x x x x x x\n404 4074 4366 x x x x\n405 4077 4369 x x x x x x\n409 4089 4381 x x x x\n410 4092 4384 x x\n411 4095 4387 x x x\n412 4098 4390 x x x\n414 4104 4396 x x x x\n416 4110 4402 x x x x\n417 4113 4405 x x x x\n418 4116 4408 x x\n419 4119 4411 x x x x x\n422 4128 4420 x x x\n423 4131 4423 x x x x x\n424 4134 4426 x\n427 4143 4435 x x x x x x x\n428 4060 4351 x\n604 6209 6510 x x x x x x x x\n605 6212 6513 x\n607 6218 6519 x\n802 8198 8722 x x x x\n803 8201 8725 x\n804 8204 8728 x x x\n805 8207 8731 x x x\n807 8213 8737 x\n808 8216 8740 x x x x x\n809 8219 8743 x x\n810 8222 8746 x x x\n811 8225 8749 x x x\n814 8234 8758 x x x x x x\n815 8237 8761 x x x\n817 8243 8767 x\n819 8249 8773 x\n822 8258 8782 x x x\n824 8264 8788 x x x\n825 8267 8791 x x x\n826 8270 8794 x x x\n829 8279 8803 x x x x\n830 8282 8806 x x\n831 8285 8809 x x x\n836 8113 8713 x\n837 8128 8716 x\n1201 12230 13077 x x x\n1202 12233 13080 x x x x\n1203 12236 13083 x x x x x x\n1206 12245 13092 x x x\n1208 12251 13098 x x\n1209 12254 13101 x x x x\n1210 12257 13104 x x x x\n1211 12260 13107 x x x x x\n1212 12263 13110 x x x x x\n1215 12272 13119 x x x\n1217 12278 13125 x\n1222 12293 13140 x\n1223 12296 13143 x x x x\n1225 12302 13149 x x\n1226 12305 13152 x x x\n1228 12311 13158 x x x\n1229 12314 13161 x\n1230 12317 13164 x x x x\n1233 12326 13173 x\n1234 12329 13176 x x x x\n1235 12232 13179 x\n1236 12335 13182 x\n1237 12338 13185 x x x x\n1601 16360 17242 x x x x\n1602 16363 17245 x x x\n1603 16366 17248 x x x x\n1605 16372 17254 x x\n1607 16378 17260 x x x x\n1609 16384 17266 x x x\n1610 16387 17269 x x x\n1611 16390 17272 x x x\n1616 16405 17287 x x x x x\n1620 16417 17299 x x\n1624 16429 17311 x x x\n1626 16435 17317 x\n1631 16450 17332 x\n1632 16453 17335 x x x x\n1641 16480 17362 x x x\n1642 16483 17365 x x x x x x x x\n1643 16486 17368 x\n1644 16489 17371 x x x x x x\n1645 16492 17374 x\n1646 16495 17377 x\n1647 16498 17380 x x x x x\n1648 16501 17383 x x x x x x\n1801 18780 19755 x x x x x x x x\n1802 18783 19758 x x x x x\n1803 18786 19761 x x x x x x x\n1804 18789 19764 x x x x\n1805 18792 19767 x x\n1807 18798 19773 x\n1808 18801 19776 x x x x x x x x\n2201 22000 22696 x x x x\n2205 22012 22708 x x x\n2210 22027 22723 x\n2214 22039 22735 x x x\n2215 22042 22738 x x x\n2216 22045 22741 x x x\n2222 22063 22759 x\n2223 22066 22762 x x x x x x\n2227 22078 22774 x x x\n2228 22081 22777 x x\n2231 22090 22786 x x x x\n2236 22105 22801 x x\n2237 22108 22804 x x x\n2241 22120 22816 x x x x x x x x\n2242 22123 22819 x\n2243 22126 22822 x x x x x x x x\n2244 22129 22825 x x x\n2245 22132 22828 x x x x\n2246 22135 22831 x\n2247 22138 22834 x x x x x x x\n2501 25070 26145 x x x x x x\n2502 25073 26148 x x x x x x x x\n2503 25076 26151 x\n2504 25079 26154 x x x x x x x x\n(2) The following table specifies the non-paired carrier frequencies that are available for assignment to public coast stations for simplex operations. These frequencies are available for use by authorized ship stations for transmissions to coast stations (simplex operations). Assignments on these frequencies must accept interference. They are shared with government users and are considered “common use” frequencies under the international Radio Regulations. They cannot be notified for inclusion in the Master International Frequency Register, which provides stations with interference protection, but may be listed in the international List of Coast Stations. (See Radio Regulation No. 1220 and Recommendation 304.)\nPublic Correspondence Simplex\n[Non-paired radiotelephony frequencies in the 4000-27500 kHz Band 1 Carrier Frequencies (kHz)]\n16537 2 18825 22174 25100\n16540 18828 22177 25103\n18831 25106\n18834 25109\n18837 25112\n1 Coast stations limited to a maximum transmitter power of 1 kW (PEP).\n2 The alternative carrier frequency 16537 kHz may be used by ship stations and coast stations for calling on a simplex basis, provided that the peak envelope power does not exceed 1 kW.\n(c) Working frequencies in the marine VHF 156-162 MHz band. (1)(i) The frequency pairs listed in this paragraph are available for assignment to public coast stations for communications with ship stations and units on land.\nWorking Carrier Frequency Pairs in the 156-162 MHz Band 1\nChannel designator Carrier Frequency (MHz)\nShip transmit Coast transmit\n24 157.200 161.800\n84 157.225 161.825\n25 5 157.250 161.850\n85 2 157.275 161.875\n26 157.300 161.900\n86 157.325 161.925\n27 157.350 161.950\n87 3 157.375 161.975\n28 157.400 162.000\n88 4 157.425 162.025\n1 For special assignment of frequencies in this band in certain areas of Washington State, the Great Lakes and the east coast of the United States pursuant to arrangements between the United States and Canada, see subpart B of this part.\n2 The frequency pair 157.275/161.875 MHz is available on a primary basis to ship and public coast stations. In Alaska it is also available on a secondary basis to private mobile repeater stations.\n3 The frequency 161.975 MHz is available only for Automatic Identification System communications. In VPCSAs 10-42, site-based stations licensed to operate on frequency 161.975 MHz prior to March 2, 2009 may continue to operate on a co-primary basis on that frequency until March 2, 2024.\n4 The frequency 162.025 MHz is available only for Automatic Identification System communications. One hundred twenty kilometers (75 miles) from the United States/Canada border, the frequency 157.425 MHz is available for intership and commercial communications. Outside the Puget Sound area and its approaches and the Great Lakes, 157.425 MHz is available for communications between commercial fishing vessels and associated aircraft while engaged in commercial fishing activities.\n5 In VPCSAs 10-42, the working carrier frequency pair 157.250/161.850 MHz (Channel 25) is not available for assignment under part 80.\n(ii) Service areas in the marine VHF 156-162 MHz band are VHF Public Coast Service Areas (VPCSAs). As listed in the table in this paragraph (c)(1)(ii), VPCSAs are based on, and composed of one or more of, the U.S. Department of Commerce's 172 Economic Areas (EAs). See 60 FR 13114 (March 10, 1995). In addition, the Commission shall treat Guam and the Northern Mariana Islands, Puerto Rico and the United States Virgin Islands, American Samoa, and the Gulf of Mexico as EA-like areas, and has assigned them EA numbers 173-176, respectively. Maps of the EAs and VPCSAs are available for public inspection through the Federal Communications Commission's Reference Information Center, Tel: 1-888-225-5322. In addition to the EAs listed in the table in this paragraph (c)(1)(ii), each VPCSA also includes the adjacent waters under the jurisdiction of the United States. In VPCSAs 10-42, the working carrier frequency pair 157.250 MHz/161.850 MHz (Channel 25) is not available for assignment under this part.\nVHF Public coast station areas (VPCSAs)\nVPCSAs EAs\n1 (Northern Atlantic) 1-5, 10\n2 (Mid-Atlantic) 9, 11-23, 25, 42, 46\n3 (Southern Atlantic) 24, 26-34, 37, 38, 40, 41, 174\n4 (Mississippi River) 34, 36, 39, 43-45, 47-53, 67-107, 113, 116-120, 122-125, 127, 130-134, 176\n5 (Great Lakes) 6-8, 54-66, 108, 109\n6 (Southern Pacific) 160-165\n7 (Northern Pacific) 147, 166-170\n8 (Hawaii) 172, 173, 175\n9 (Alaska) 171\n10 (Grand Forks) 110\n11 (Minot) 111\n12 (Bismarck) 112\n13 (Aberdeen) 114\n14 (Rapid City) 115\n15 (North Platte) 121\n16 (Western Oklahoma) 126\n17 (Abilene) 128\n18 (San Angelo) 129\n19 (Odessa-Midland) 135\n20 (Hobbs) 136\n21 (Lubbock) 137\n22 (Amarillo) 138\n23 (Santa Fe) 139\n24 (Pueblo) 140\n25 (Denver-Boulder-Greeley) 141\n26 (Scottsbluff) 142\n27 (Casper) 143\n28 (Billings) 144\n29 (Great Falls) 145\n30 (Missoula) 146\n31 (Idaho Falls) 148\n32 (Twin Falls) 149\n33 (Boise City) 150\n34 (Reno) 151\n35 (Salt Lake City-Ogden) 152\n36 (Las Vegas) 153\n37 (Flagstaff) 154\n38 (Farmington) 155\n39 (Albuquerque) 156\n40 (El Paso) 157\n41 (Phoenix-Mesa) 158\n42 (Tucson) 159\n(iii) Subject to paragraph (c)(3) of this section, each licensee may also operate on 12.5 kHz offset frequencies in areas where the licensee is authorized on both frequencies adjacent to the offset frequency, and in areas where the licensee on the other side of the offset frequency consents to the licensee's use of the adjacent offset frequency. Coordination with Canada is required for offset operations under any circumstance in which operations on either adjoining 25 kHz channel would require such coordination. See § 80.57 of this part.\n(2) Any recovered channel pairs will revert automatically to the holder of the VPCSA license within which such channels are included, except the channel pairs listed in the table in paragraph (c)(1)(i) of this section. Those channel pairs, and any channel pairs recovered where there is no VPCSA licensee, will be retained by the Commission for future licensing.\n(e) Canada/U.S.A. channeling arrangement frequencies. The VHF frequencies assignable to ship and coast stations in the State of Washington and their usage limitations pursuant to the Canada/U.S.A. channeling arrangement are described in subpart B of this part.\n(4) Subject to the requirements of § 1.924 of this chapter and § 80.21, each VPCSA licensee may place stations anywhere within its region without obtaining prior Commission approval provided:\n(i) It provides to co-channel coast station incumbent licensees, and incumbent Private Land Mobile Radio licensees authorized under part 90 of this chapter on a primary basis, protection as defined in subpart P of this part. VPCSA licensees that share a common border may either distribute the available frequencies upon mutual agreement or request that the Commission assign frequencies along the common border.\n(ii) The locations and/or technical parameters of the transmitters are such that individual coordination of the channel assignment(s) with a foreign administration, under applicable international agreements and rules in this part, is not required.\n(iii) For any construction or alteration that would exceed the requirements of § 17.7 of this chapter, licensees must notify the appropriate Regional Office of the Federal Aviation Administration (FAA Form 7460-1) and file a request for antenna height clearance and obstruction marking and lighting specifications (FCC Form 854) with the FCC, Attn: Information Processing Branch, 1270 Fairfield Rd., Gettysburg, PA 17325-7245.\n(iv) The transmitters must not have a significant environmental effect as defined by §§ 1.1301 through 1.1319 of this chapter.\n(d) Working frequencies in the Mississippi River System. The Mississippi River System includes the Mississippi River and connecting navigable waters other than the Great Lakes. The following simplex frequencies are available for assignment to public coast stations serving the Mississippi River System for radiotelephony communications. These simplex frequencies also are available for use by authorized ship stations within communication service range, whether or not the ship is operating within the confines of the Mississippi River System.\nMississippi River System Working Frequencies; Carrier Frequencies (kHz)\n2086 1 4065 6209 8201 12362 16543\n2782 4089 6212 8213 12365 16546\n4116 6510 8725\n4408 6513 8737\n1 Limited to a maximum transmitter output of 150 watts (PEP).\n(e) Canada/U.S.A. channeling arrangement frequencies. The VHF frequencies assignable to ship and coast stations in the State of washington and their usage limitations purusant to the Canada/U.S.A. channeling arrangement are described in subpart B of this part.","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES","PART 80—STATIONS IN THE MARITIME SERVICES","Subpart H—Frequencies"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-47.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:28Z","sha256":"a5ae7bddb08b08aaf21f3c9a0bf66ca9f1040030558c67e33843e9b4bee5cd11","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-80.369","next":"us/47-cfr-80.373"},"notice":"GroundRules: Original legal text. Not legal advice."}