ITU and USCG Maritime Allocation List Current as of May, 1998 Some information from US Coast Guard All voice is USB, though some AM persists on 2 MHz. 2 MHz Marine Radiotelephone Frequencies May, 1998 Intership Safety and Operational Communications. kHz Geographic Area 2003.0 Great Lakes only 2082.5 All Areas. Also, intership non-commercial fishing. 2093.0 All Areas. 2142.0 Pacific Coast, daily, south of 42 deg. N 2182.0 Distress, safety and calling 2203.0 Gulf of Mexico. Also intership non-commercial fishing. 2214.0 All Areas. 2635.0 ITU Regions 2-3 (ITU RR 4193). Not in FCC rules. 2638.0 All Areas. 2670.0 U.S. Coast Guard Liaison and Maritime Safety Broadcasts 2738.0 All Areas, except Great Lakes. 2830.0 Gulf of Mexico only. Business and Operational Frequencies kHz Geographic Area 2065.0 All Areas. 2079.0 All Areas. 2096.5 All Areas. 3023.0 Government shore, ship and aircraft stations for search and rescue coordination. Reference: FCC Regulations, 47 CFR 80.373(b) and (c), except as noted. Assignments are required before these frequencies can be used by land stations. Duplex channels are not available in this band. Created: 6 May 1998 Commandant (G-SCT) U.S. Coast Guard Washington DC 20593 ====================================================================== Maritime Duplex Channels May, 1998 This list, courtesy US Coast Guard, includes slight changes made at WRC- 97 to implement the GMDSS safety channels. The ITU provides for shared simplex use of the ship side, as is common on 4125 kHz. Shore stations can be licensed on the coastal side, and thus be protected against interference. 4 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 401 4357 kHz 4065 kHz 402 4360 4068 403 4363 4071 404 4366 4074 405 4369 4077 406 4372 4080 407 4375 4083 408 4378 4086 409 4281 4089 410 4384 4092 411 4387 4095 412 4390 4098 413 4393 4101 414 4396 4104 415 4399 4107 416 4402 4110 417 4405 4113 418 4408 4116 419 4411 4119 420 4414 4122 421 4417 4125 (See Note below) 422 4420 4128 423 4423 4131 424 4426 4134 (USCG Calling) 425 4429 4137 426 4432 4140 427 4435 4143 428 4351 (varies) 429 4354 (varies) Note regarding channel 421: 4125 kHz is used for calling, and is for GMDSS distress and safety communications, in the simplex mode. Distress and safety communications have priority over all other communications. The USCG urges that channel 421 not be used in the duplex mode. Updated: 10 April 1998 6 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 601 6501 (kHz) 6200 (kHz)(USCG Calling) 602 6504 6203 603 6507 6206 604 6510 6209 605 6513 6212 606 6516 6215 (Calling; distress & safety working on 6215 kHz simplex) 607 6519 6218 608 6522 6221 8 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 801 8719 (kHz) 8195 (kHz) 802 8722 8198 803 8725 8201 804 8728 8204 805 8731 8207 806 8734 8210 807 8737 8213 808 8740 8216 809 8743 8219 810 8746 8222 811 8749 8225 812 8752 8228 813 8755 8231 814 8758 8234 815 8761 8237 816 8764 8240 (USCG Calling) 817 8767 8243 818 8770 8246 819 8773 8249 820 8776 8252 821 8779 8255 (Calling) 822 8782 8258 823 8785 8261 824 8788 8264 825 8791 8267 826 8794 8270 827 8797 8273 828 8800 8276 829 8803 8279 830 8806 8282 831 8809 8285 832 8812 8288 833 8291 8291 834 8707 (varies) 835 8710 (varies) 836 8713 (varies) 837 8716 (varies) 12 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 1201 13,077 kHz 12,230 kHz 1202 13,080 12,233 1203 13,083 12,236 1204 13,086 12,239 1205 13,089 12,242 (USCG Calling) 1206 13,092 12,245 1207 13,095 12,248 1208 13,098 12,251 1209 13,101 12,254 1210 13,104 12,257 1211 13,107 12,260 1212 13,110 12,263 1213 13,113 12,266 1214 13,116 12,269 1215 13,119 12,272 1216 13,122 12,275 1217 13,125 12,278 1218 13,128 12,281 1219 13,131 12,284 1220 13,134 12,287 1221 13,137 12,290 (See Note below) 1222 13,140 12,293 1223 13,143 12,296 1224 13,146 12,299 1225 13,149 12,302 1226 13,152 12,305 1227 13,155 12,308 1228 13,158 12,311 1229 13,161 12,314 1230 13,164 12,317 1231 13,167 12,320 1232 13,170 12,323 1233 13,173 12,326 1234 13,176 12,329 1235 13,179 12,332 1236 13,182 12,335 1237 13,185 12,338 1238 13,188 12,341 1239 13,191 12,344 1240 13,194 12,347 1241 13,197 12,3500 Note regarding channel 1221: The ITU, at its 1997 World Radio Conference, urged Administrations to move, where relevant, their coast stations calling frequency from channel 1221 to any other suitable HF channel, and to request ships under its jurisdiction to refrain from using the frequency 12290 kHz for non-safety calling. (WRC 97 Rec COM 4-1) Updated 10 April 1998 16 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 1601 17,242 kHz 16,360 kHz 1602 17,245 16,363 1603 17,248 16,366 1604 17,251 16,369 1605 17,254 16,372 1606 17,257 16,375 1607 17,260 16,378 1608 17,263 16,381 1609 17,266 16,384 1610 17,269 16,387 1611 17,272 16,390 1612 17,275 16,393 1613 17,278 16,396 1614 17,281 16,399 1615 17,284 16,402 1616 17,287 16,405 1617 17,290 16,408 1618 17,293 16,411 1619 17,296 16,414 1620 17,299 16,417 1621 17,302 16,420 (See Note below) 1622 17,305 16,423 1623 17,308 16,426 1624 17,311 16,429 1625 17,314 16,432 (USCG Calling) 1626 17,317 16,435 1627 17,320 16,438 1628 17,323 16,441 1629 17,326 16,444 1630 17,329 16,447 1631 17,332 16,450 1632 17,335 16,453 1633 17,338 16,456 1634 17,341 16,459 1635 17,344 16,462 1636 17,347 16,465 1637 17,350 16,468 1638 17,353 16,471 1639 17,356 16,474 1640 17,359 16,477 1641 17,362 16,480 1642 17,365 16,483 1643 17,368 16,486 1644 17,371 16,489 1645 17,374 16,492 1646 17,377 16,495 1647 17,380 16,498 1648 17,383 16,501 1649 17,386 16,504 1650 17,389 16,507 1651 17,392 16,510 1652 17,395 16,513 1653 17,398 16,516 1654 17,401 16,519 1655 17,404 16,522 1656 17,407 16,525 Note regarding channel 1621: The ITU, at its 1997 World Radio Conference, urged Administrations to move, where relevant, their coast stations calling frequency from channel 1621 to any other suitable HF channel, and to request ships under its jurisdiction to refrain from using the frequency 16420 kHz for non-safety calling. (WRC 97 Rec COM 4-1) Updated: 10 April 1998 18/19 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 1801 19,755 kHz 18,780 kHz 1802 19,758 18,783 1803 19,761 18,786 1804 19,764 18,789 1805 19,767 18,792 1806 19,770 18,795 (Calling) 1807 19,773 18,798 1808 19,776 18,801 1809 19,779 18,804 1810 19,782 18,807 1811 19,785 18,810 1812 19,788 18,813 1813 19,791 18,816 1814 19,794 18,819 1815 19,797 18,822 22 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 2201 22,696 kHz 22,000 kHz 2202 22,699 22,003 2203 22,702 22,006 2204 22,705 22,009 2205 22,708 22,012 2206 22,711 22,015 2207 22,714 22,018 2208 22,717 22,021 2209 22,720 22,024 2210 22,723 22,027 2211 22,726 22,030 2212 22,729 22,033 2213 22,732 22,036 2214 22,735 22,039 2215 22,738 22,042 2216 22,741 22,045 2217 22,744 22,048 2218 22,747 22,051 2219 22,750 22,054 2220 22,753 22,057 2221 22,756 22,060 (Calling) 2222 22,759 22,063 2223 22,762 22,066 2224 22,765 22,069 2225 22,768 22,072 2226 22,771 22,075 2227 22,774 22,078 2228 22,777 22,081 2229 22,780 22,084 2230 22,783 22,087 2231 22,786 22,090 2232 22,789 22,093 2233 22,792 22,096 2234 22,795 22,099 2235 22,798 22,102 2236 22,801 22,105 2237 22,804 22,108 2238 22,807 22,111 2239 22,810 22,114 2240 22,813 22,117 2241 22,816 22,120 2242 22,819 22,123 2243 22,822 22,126 2244 22,825 22,129 2245 22,828 22,132 2246 22,831 22,135 2247 22,834 22,138 2248 22,837 22,141 2249 22,840 22,144 2250 22,843 22,147 2251 22,846 22,150 2252 22,849 22,153 2253 22,852 22,156 25/26 MHz Duplex Channels ITU Channel No. Coast Transmit Ship Transmit 2501 26,145 kHz 25,070 kHz 2502 26,148 25,073 2503 26,151 25,076 2504 26,154 25,079 2505 26,157 25,082 2506 26,160 25,085 2507 26,163 25,088 2508 26,166 25,091 2509 26,169 25,094 2510 26,172 25,097 (Calling) ====================================================================== HF Single Sideband Maritime Radiotelephone Channels Simplex Channels These frequencies are shared and are not available for the exclusive use of any station. 4 MHz Band 6 MHz Band 8 MHz Band 12 MHz Band 4146 kHz 6224 kHz 8294 kHz 12,353 kHz 4149 6227 8297 12,356 6230 12,359 12,362 12,365 16 MHz 18/19 MHz Band 22 MHz Band 25/26 MHz Band 16,528 kHz 18,825 kHz 22,159 kHz 25,100 kHz 16,531 18,828 22,162 25,103 16,534 18,831 22,165 25,106 16,537 18,834 22,168 25,109 16,540 18,837 22,171 25,112 16,543 18,840 22,174 25,115 16,546 18,843 22,177 25,118 Maritime Channels Shared with the Fixed Service The following channels in the band 4000-4063 kHz and 8100-8195 kHz may be used: - for supplementing ship-to-shore channels for duplex operation; - for intership simplex (single-frequency) and cross-band operation; - for cross-band working with coast stations; - for duplex operation with coast stations working in the band 4438-4650 kHz or with Channels 834, 835, 836 and 837; - for ship-to-shore or shore-to-ship simplex operations (8100-8195 kHz only). 4 MHz Carrier 8 MHz Carrier Channel No. Frequency kHz Frequency kHz 1 4000 8101 2 4003 8104 3 4006 8107 4 4009 8110 5 4012 8113 6 4015 8116 7 4018 8119 8 4021 8122 9 4024 8125 10 4027 8128 11 4030 8131 12 4033 8134 13 4036 8137 14 4039 8140 15 4042 8143 16 4045 8146 17 4048 8149 18 4051 8152 19 4054 8155 20 4057 8158 21 4060 8161 22 -- 8164 23 -- 8167 24 -- 8170 25 -- 8173 26 -- 8176 27 -- 8179 28 -- 8182 29 -- 8185 30 -- 8188 31 -- 8191 Global Maritime Distress & Safety System Radiotelephone Channels These simplex frequencies are used for distress and safety communications, and (except for 2182 kHz) are not normally guarded. 2182 kHz 8291 kHz 4125 12,290 6215 16,420 ===================================================================== How To Contact the US Coast Guard May, 1998 As part of the new COMMSYS 2000, USCG's implementation of the international GMDSS, most COMMSTAs are being automated and remoted to CAMSPAC Point Reyes (near San Francisco) or CAMSLANT Chesapeake (VA). While all radio watches for GMDSS compulsory ships end as of 1 Feb 1999, many coast guards will continue to listen on 2182 kHz. USCG has announced its intention to guard VHF Channel 16 indefinitely, for safety reasons. Certain GMDSS implementations described in the following document are delayed pending USCG review of problems with DSC, including the excessive false alarms. Check GMDSS coverage charts to see the status of your area. -hugh Commandant (G-SCT-2) U.S. Coast Guard Updated: 13 February 1998 Washington DC 20593 U.S. COAST GUARD HF DISTRESS AND SAFETY RADIO WATCHKEEPING SCHEDULE The SELCAL number is used for radiotelex (sitor). The Maritime Mobile Service Identity (MMSI) is used for digital selective calling and may also be used for radiotelex. Note that except for the digital selective calling channels listed at the bottom of this page, the frequency channels described here are generally not Global Maritime Distress & Safety System (GMDSS) distress and safety channels. The Coast Guard does NOT monitor GMDSS radiotelephone or radiotelex channels. U.S. COAST GUARD COMMUNICATION STATIONS Station: USCG Communications Area Master Station Atlantic, Chesapeake VA/NMN SELCAL: 1097 MARITIME MOBILE SERVICE IDENTITY: 003669995 Station: USCG Communications Area Master Station Atlantic, remotely keying transmitters at Boston/NMF SELCAL: (1095) MARITIME MOBILE SERVICE IDENTITY: 003669991 Station: USCG Communications Area Master Station Atlantic, remotely keying transmitters at Miami/NMA SELCAL: -- MARITIME MOBILE SERVICE IDENTITY: 003669997 Station: USCG Communications Station New Orleans/NMG SELCAL: -- MARITIME MOBILE SERVICE IDENTITY: 003669998 Station: USCG Communications Area Master Station Pacific, Pt. Reyes CA/NMC SELCAL: 1096 MARITIME MOBILE SERVICE IDENTITY: 003669990 Station: USCG Communications Area Master Station Pacific, remotely keying transmitters at Guam/NRV SELCAL: 1100 or 1096 MARITIME MOBILE SERVICE IDENTITY: -- Station: USCG Communications Station Honolulu HI/NMO SELCAL: 1099 MARITIME MOBILE SERVICE IDENTITY: 003669993 Station: USCG Communications Station Kodiak AK/NOJ SELCAL: 1106 MARITIME MOBILE SERVICE IDENTITY: 003669899 Station: USCG Marianas Section Guam MARITIME MOBILE SERVICE IDENTITY: 003669994 HF RADIOTELEPHONE (SINGLE SIDEBAND) - Contact and Long Range Liaison ITU KHz SHIP KHz COAST Station and Schedule (UTC) CHANNEL STATION STATION NMN NMN/NMF NMG 424 4134 4426 2300-1100 2230-1030 24 HRS 601 6200 6501 24 HRS 24 HRS 24 HRS 816 8240 8764 24 HRS 24 HRS 24 HRS 1205 12242 13089 1100-2300 1030-2230 24 HRS 1625 16432 17314 ( -- on request only --) ITU KHz SHIP KHz COAST Station and Schedule (UTC) CHANNEL STATION STATION NMC NMO NOJ - 4125 4125 - - 24 HRS 424 4134 4426 24 HRS 0600-1800 on request 601 6200 6501 24 HRS 24 HRS 24 HRS 816 8240 8764 24 HRS 24 HRS on request 1205 12242 13089 24 HRS 1800-0600 on request 1625 16432 17314 ( -- on request only --) ITU KHz SHIP KHz COAST Station and Schedule (UTC) CHANNEL STATION STATION Guam NMN/NMA 601 6200 6501 0900-2100 24 HRS 1205 12242 13089 2100-0900 24 HRS 1625 16432 17314 - 24 HRS HF RADIOTELEX (SITOR OR NARROW BAND DIRECT PRINTING) NMN - Portsmouth ITU KHz COAST KHz SHIP Schedule (UTC) CHANNEL STATION STATION 404 4212 4174 On request 604 6316 6264.5 2300-1100 824 8428 8388 24 HRS 1227 12592.5 12490 24 HRS 1627 16819.5 16696.5 24 HRS 2227 22389.5 22297.5 1100-2300 NMO - Honolulu ITU KHz COAST KHz SHIP Schedule (UTC) CHANNEL STATION STATION 404 4212 4174 On request 604 6316 6264.5 On request 827 8429.5 8389.5 24 HRS 1220 12589 12486.5 24 HRS 1627 16819.5 16696.5 On request 2227 22389.5 22297.5 Daytime NMC- San Francisco ITU KHz COAST KHz SHIP Schedule (UTC) CHANNEL STATION STATION 412 4215.5 4178 On request 620 6323.5 6272.5 Nighttime 820 8426 8386 24 HRS 1242 12600 12497.5 On request 1620 16816.5 16693 Daytime 2220 22386 22294 On request NMC - San Francisco, using Guam remote transmitter/receiver control (NRV) ITU KHz COAST KHz SHIP Schedule (UTC) CHANNEL STATION STATION 412 4215.5 4178 On request 612 6319.5 6268.5 On request 812 8422 8382 Nighttime 1212 12585 12482.5 24 HRS 1612 16812.5 16689 24 HRS 2212 22382 22290 Daytime NOJ - Kodiak ITU KHz COAST KHz SHIP Schedule (UTC) CHANNEL STATION STATION 407 4213.5 4175.5 Nighttime 607 6317.5 6266 24 HRS 807 8419.5 8379.5 Daytime RADIOTELEX SERVICES AVAILABLE COMMAND EXPLANATION RESPONSE OBS+ WEATHER OBSERVATION MOM11+ MSG+ (message must be in standard format) AMV+ AMVER MESSAGE MOM01+ MSG+ (message must be in standard format) MED+ MEDICAL EMERGENCIES MOM07+ MSG+ (signals an alarm at the coast station) URG+ SHIPBOARD DISTRESS/EMERGENCY MOM20+ MSG+ (signals an alarm at the coast station) TFC+ MISCELLANEOUS ROUTINE MOM16+ MSG+ MESSAGES VES+ U.S. FISHERIES, POLLUTION MOM13+ MSG+ OR OTHER REQUIRED VESSEL REPORT OPR+ OPERATOR ASSISTANCE FREQ+ FREQUENCY GUARD SCHEDULE LIST MSG+ DOWNLOADS SHORE-TO-SHIP MESSAGES (limited to government vessels) BRK+ BREAK OFF COMMUNICATIONS HELP+ LIST OF AVAILABLE COMMANDS HF DIGITAL SELECTIVE CALLING Portsmouth/NMN, Boston/NMF, Miami/NMA. New Orleans/NMG (after February 97) 2187.5 kHz Coast Guard will normally respond to DSC 4207.5 test calls if acknowledgment is requested. 6312 Reports of uncancelled or unacknowledged 8414.5 inadvertently transmitted distress calls 12577 will be forwarded to the Federal 16804.5 Communications Commission. Note: For radiotelex and digital selective calling, frequencies listed are assigned. Carrier frequency is located 1700Hz below the assigned frequency. -end-