SEA AREAS
A1 Within range of shore-based VHF DSC coast station (40 nautical miles)
A2 Within range of shore-based MF DSC coast station (excluding sea areas A1)(150 nautical
miles)
A3 Within the coverage of an Inmarsat geostationary satellite (approximately 70°N to
70°S) (excluding sea areas A1 & A2)
A4 The remaining areas outside sea areas A1, A2 & A3 (polar regions)
After the initial distress alert and acknowledgement, subsequent
communications are made by radiotelephony or narrow-band direct printing (NBDP) as
indicated in the distress message.Note that voice transmissions are not allowed on
the DSC channels.
YOU NEED TO TUNE YOUR RECEIVER 1.7 kHZ BELOW THE
ASSIGNED FREQUENCY,UNLESS YOU ARE USING A RECEIVER THAT HAS A DIFFERENT OFSET/DISPLAY
METHOD,THE TARGET COMMUNICATION RECEIVER SPRINGS TO MIND WITH THE DIAl READING 2KHZ HIGHER
THAN ACTUAL FREQUENCY.YOU DO NEED A GOOD RECEIVER FOR THIS MODE.
Frequency |
DSC Frequency |
RX Displayed |
R/T |
NBDP |
RX Displayed |
4 MHZ |
4207.5 kHz |
4205.8 kHz |
4125.0 kHz |
4210.0 kHz |
4208.3 kHz |
6 MHZ |
6312.0 kHz |
6310.5 kHz |
6215.0 kHz |
6314.0 kHz |
6213.3 kHz |
8 MHZ |
8414.5 kHz |
8412.8 kHz |
8291.0 kHz |
8416.5 kHz |
8414.8 kHz |
12 MHZ |
12,577.0 kHz |
12575.3 kHz |
12,290.0 kHz |
12,579.0 kHz |
12577.3kHz |
16 MHZ |
16,804.5 kHz |
16802.8 kHz |
16,420.0 kHz |
16,806.5 kHz |
16804.8 kHz |
22 MHZ |
- |
|
- |
22,376.0 kHZ |
22374.3 kHz |
 |
EXTRACT FROM COAA DSC MESSAGE
SCREEN
US COAST GUARD NBDP ( SITOR )
Boston(NMF) 6314(00,01Z), 8416.5, 12579, 16806.5(12,16Z) kHz
Pt. Reyes(NMC) 8416.5, 16806.5 kHz
Honolulu(NMO) 8416.5, 12579, 22376 kHz
Guam(NRV) 12579, 16806.5, 22376 kHz
VHF
Ships operating within VHF range can use the DSC calling frequency, 156.525 MHz (Channel
70) for distress alerts and safety calls, and 156.8 MHz (Channel 16) for radiotelephone
distress and safety traffic
DISTRESS FREQUENCIES
Frequency |
Comments |
2182kHz |
MF International distress frequency for ship, aircraft
and survival craft. |
3023kHz |
Intercommunications between mobile stations engaged in
coordintion of search and rescue. |
4125kHz |
Distress and safety traffic by radiotelephone |
5680kHz |
Intercommunications between mobile stations engaged in
coordintion of search and rescue. |
6125kHz |
Distress and safety traffic by radiotelephone |
8364kHz |
Designated for use by survival craft stations. |
Band |
R/T Frequency |
DSC Frequency |
MF |
2182 kHz |
2187.5 kHz |
4 MHZ |
4125 kHz |
4207.5 kHZ |
6 MHZ |
6215 kHz |
6312 kHz |
8 MHZ |
8291 kHz |
8414.5 kHZ |
12 MHZ |
12290 kHz |
12577 kHz |
16 MHZ |
16420 kHz |
16804.5 kHz |
VHF |
156.800 MHz (Ch16) |
156.525 MHz (Ch 70) |
Distress beacons
GMDSS makes use of the COSPAS-SARSAT Satellite System which provides global detection
of 406.025 GHz EPIRBs.Some EPIRBs also transmit on 121.5Mhz,The equipment that detects the
121.5Mhz signal is due to be phased out shortly, but it will remain an aircraft distress
frequency
NAVTEX
Navtex which operates on
518 kHz, is the chief means of transmitting short range maritime safety information
(MSI) including navigational warnings, meteorological forecasts and warnings, ice reports,
search and rescue information, pilot messages and details of changes to navigational
aids.All ships of 300 gross tonnage and above are required to carry a receiver, capable of
receiving international NAVTEX broadcasts
NAVTEX
RT FREQUENCIES OF VARIOUS STATIONS
Station |
Callsign |
4MHz |
6MHz |
8MHz |
12MHz |
16MHz |
18MHz |
22MHz |
25MHz |
| Olympia,
Greece |
SVN |
424 |
. |
806 |
1232 |
1640 |
. |
. |
. |
| Cyprus Radio |
5BA |
406 |
. |
807 |
1208 |
1603 |
. |
. |
. |
| Lyngby,
Denmark |
OZX |
418 |
. |
808 |
1203
1214 |
. |
. |
. |
. |
| Monaco Radio |
3AC |
403 |
. |
804 |
1224 |
1607 |
. |
. |
. |
| Rogaland,
Norway |
LFL |
. |
. |
811 |
1228 |
. |
. |
. |
. |
| Hefa radio
Israel |
4XO |
. |
. |
810 |
. |
1617 |
. |
. |
. |
| Istanbul,
Turkey |
TAH |
417 |
. |
811 |
. |
. |
. |
. |
. |
| Lisboa,
Portugal |
CUL |
. |
. |
802 |
1203 |
1615 |
. |
. |
. |
| Madrid Spain |
EHY |
. |
. |
804 |
1201 |
1637 |
. |
. |
. |
| Rijeka,
Croatia |
9AR |
408 |
. |
810 |
1229 |
. |
. |
. |
. |
| Roma, Italy |
IAR |
412 |
. |
831 |
1221 |
1621 |
. |
2202 |
. |
| Shipcom - USA
|
WLO |
417 |
607 |
805 |
1209 |
1624 |
. |
. |
. |
| Shipcom - USA |
KLB |
417 |
. |
805 |
1209 |
1624 |
. |
. |
. |
| Shipcom - USA |
WLO |
414 |
607 |
824 |
1212 |
1607 |
1807 |
2237 |
2503 |
| Barbados |
8PO |
. |
. |
816 |
1213 |
. |
. |
. |
. |
| Jamaica |
6YI |
405 |
605 |
812 |
1224 |
. |
. |
. |
. |
| USA |
. |
405
421 |
605
606 |
821
816 |
1213
1224 |
. |
. |
. |
. |
BY USING THE BELOW
INFORMATION, YOU WILL BE ABLE TO FIND BOTH THE SHIP & COAST STATION FREQUENCIES FROM
THE ABOVE LIST OF STATIONS.
LIST OF ITU CHANNEL NUMBERS
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 4381 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
422 4420 4128
423 4423 4131
424 4426 4134
425 4429 4137
426 4432 4140
427 4435 4143
428 4351 (varies)
429 4354 (varies)
6 MHz Duplex Channels
ITU Channel No. Coast Transmit Ship Transmit
601 6501 kHz 6200 kHz
602 6504 6203
603 6507 6206
604 6510 6209
605 6513 621
606 6516 6215
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
817 8767 8243
818 8770 8246
819 8773 8249
820 8776 8252
821 8779 8255
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
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
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 12,350
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
1622 17,305 16,423
1623 17,308 16,426
1624 17,311 16,429
1625 17,314 16,432
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
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
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
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
MORE MARINE
INFORMATION
