{"data":{"id":"us/47-cfr-80.205","jurisdiction":"us","citation":"47 CFR 80.205","heading":"Bandwidths.","body":"(a) An emission designator shows the necessary bandwidth for each class of emission of a station except that in ship earth stations it shows the occupied or necessary bandwidth, whichever is greater. The following table gives the class of emission and corresponding emission designator and authorized bandwidth:\nClass of emission Emission designator Authorized bandwidth (kHz)\nA1A 160HA1A 0.4\nA1B 1 160HA1B 0.4\nA1D 12 16K0A1D 20.0\nA2A 2K66A2A 2.8\nA2B 1 2K66A2B 2.8\nA2D 12 16K0A2D 20.0\nA3E 6K00A3E 8.0\nA3N 2 2K66A3N 2.8\nA3X 3 3K20A3X 25.0\nF1B 4 280HF1B 0.3\nF1B 5 300HF1B 0.5\nF1B 6 16KOF1B 20.0\nF1C 2K80F1C 3.0\nF1D 12 16K0F1D 20.0\nF2B 6 16KOF2B 20.0\nF2C 7 16KOF2C 20.0\nF2D 12 16K0F2D 20.0\nF3C 2K80F3C 3.0\nF3C 7 16KOF3C 20.0\nF3E 8 16KOF3E 20.0\nF3N 9 20MOF3N 20,000.0\nG1D 12 16K0G1D 20.0\nG2D 12 16K0G2D 20.0\nG3D 10 16KOG3D 20.0\nG3E 8 16KOG3E 20.0\nG3N 3 13 16KOG3N 20.0\nH2A 1K40H2A 2.8\nH2B 1 1K40H2B 2.8\nH3E 11 2K80H3E 3.0\nH3N 2K66H3N 2.8\nJ2A 160HJ2A 0.4\nJ2B 4 280HJ2B 0.3\nJ2B 5 300HJ2B 0.5\nJ2B 2K80J2B 3.0\nJ2C 2K80J2C 3.0\nJ2D 14 2K80J2D 3.0\nJ3C 2K80J3C 3.0\nJ3E 11 2K80J3E 3.0\nJ3N 160HJ3N 0.4\nNON NON 0.4\nPON ( 12) ( 12)\nR3E 11 2K80R3E 3.0\n1 On 500 kHz and 2182 kHz A1B, A2B, H2B and J2B emissions indicate transmission of the auto alarm signals.\n2 Applicable only to transmissions in the 405-525 kHz band for direction finding.\n3 Applicable only to EPIRB's.\n4 Radioprinter transmissions for communications with private coast stations.\n5 NB-DP radiotelegraph and data transmissions for communications with public coast stations.\n6 Applicable only to radioprinter and data in the 156-162 MHz band and radioprinter in the 216-220 MHz band.\n7 Applicable only to facsimile in the 156-162 MHz and 216-220 MHz bands.\n8 Applicable only when maximum frequency deviation is 5 kHz. See also paragraph (b) of this section.\n9 Applicable only to marine hand-held radar.\n10 Applicable only to on-board frequencies for maneuvering or navigation.\n11 Transmitters approved prior to December 31, 1969, for emission H3E, J3E and R3E and an authorized bandwidth of 3.5 kHz may continue to be operated. These transmitters will not be authorized in new installations.\n12 Applicable to radiolocation and associated telecommand ship stations operating on 154.585 MHz, 159.480 MHz, 160.725 MHz. 160.785 MHz, 454.000 MHz, and 459.000 MHz; emergency position indicating radiobeacons operating in the 406.000-406.1000 MHz frequency bank; and data transmissions in the 156-162 MHz band.\n13 [Reserved]\n14 The information is contained in multiple very low level subcarriers.\n(b) For land stations the maximum authorized frequency deviation for F3E or G3E emission is as follows:\n(1) 5 kHz in the 72.0-73.0 MHz, 75.4-76.0 MHz and 156-162 MHz bands;\n(2) [Reserved]","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES","PART 80—STATIONS IN THE MARITIME SERVICES","Subpart E—General Technical Standards"],"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":"db426478299d9aa79d0d2acbe07f70f70ba48f576abd8c63140962ee659c5d47","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-80.203","next":"us/47-cfr-80.207"},"notice":"GroundRules: Original legal text. Not legal advice."}