HF marine
From HFUnderground
HF-SSB marine bands - these are standardized maritime mobile MF and HF communications bands - note that many maritime mobile users operate outside of these bands and there are dozens of country- or region-specific additional bands/frequencies.
Fisheries, fishing boats, and other commercial marine users will often use frequencies in the fixed/mobile bands (including 43 meters - 6765-7000 kHz) clear frequencies in the shortwave broadcast bands or even amateur frequencies for "out of band" communications to reduce the chance of radio interception by their competition.
See also: VHF marine band
MF SSB and HF SSB marine bands
| Band | Frequency Range |
|---|---|
| 405-525 kHz | MF band, used in some areas for NAVTEX on 490 kHz and/or 518 kHz. 500 kHz was the original CW Morse code calling frequency |
| 1600-1800 kHz | MF band, used in Europe and elsewhere (also used heavily for fishnet beacons) |
| 2000-2300 kHz | MF 2 MHz marine band - USB voice calling 2182 kHz, DSC calling 2187.5 kHz |
| 2450-2850 kHz | MF 2 MHz marine band |
| 4000-4063 kHz | 4 MHz fixed/mobile band, shared with marine for simplex purposes |
| 4063-4438 kHz | HF 4 MHz marine band - USB voice calling 4125 kHz, DSC calling 4207.5 kHz |
| 6200-6525 kHz | HF 6 MHz marine band - USB voice calling 6215 kHz, DSC calling 6312 kHz |
| 8000-8195 kHz | 8 MHz fixed/mobile band, shared with marine for simplex purposes |
| 8195-8815 kHz | HF 8 MHz marine band - USB voice calling 8291 kHz, DSC calling 8414.5 kHz |
| 12330-13200 kHz | HF 12 MHz marine band - USB voice calling 12290 kHz, DSC calling 12577 kHz |
| 16460-17360 kHz | HF 16 MHz/17 MHz marine band - USB voice calling 16420 kHz, DSC calling 16804.5 kHz |
| 22000-22855 kHz | HF 22 MHz marine band |
| 25070-25121 kHz | HF 25 MHz marine band |
| 26145-26175 kHz | HF 26 MHz marine band |
| 26175-28000 kHz | Various CB-like marine allocations found in this region |
