IMPORTANT : This list is non-exhaustive and mainly includes GMDSS frequency allocations.
LF (30-300 kHz)
| Band
|
Usage
|
| 90-110 kHz
|
LORAN
|
MF (300-3000 kHz)
| Freq (kHz)
|
Usage
|
| 238.5 - 325
|
MF marine radio beacons, DGNSS beacons
|
| 415-535
|
MF Radiotelegraphy
|
| 490
|
NAVTEX national, used exclusively for MSI.
|
| 500
|
NAVDAT
|
| 518
|
NAVTEX international
|
| 1605-3800
|
MF Radiotelephony
|
| 2174.5
|
Distress and safety NBDP
|
| 2187.5
|
MF DSC
|
HF (3,000-30,000 kHz)
| Freq (kHz)
|
Usage
|
| 3,023
|
Aeronautical carrier frequency, may be used between mobile stations in SAR ops.
|
| 4,125
|
May be used by aircraft stations to communicate with MMS stations for distress and safety purposes including SAR.
|
| 4,177.5
|
Distress and safety comms, NBDP
|
| 4,207.5
|
HF DSC
|
| 4,209.5
|
NAVTEX transmissions
|
| 4,210
|
Transmission of high seas MSI by coast stations using NBDP
|
| 5,680
|
Aeronautical carrier frequency, may be used between mobile stations in SAR ops.
|
| 6,215
|
Distress and safety comms, radiotelephony
|
| 6,268
|
Distress and safety comms, NBDP
|
| 6,312
|
HF DSC
|
| 6,314
|
MSI-HF; transmission of MSI by coast stations to ships using NBDP
|
| 8,291
|
Distress and safety comms, radiotelephony
|
| 8,414.5
|
HF DSC
|
| 8,416.5
|
MSI-HF; transmission of MSI by coast stations to ships using NBDP
|
| 12,290
|
Distress and safety comms, radiotelephony
|
| 12,520
|
Distress and safety comms, NBDP
|
| 12,577
|
HF DSC
|
| 12,579
|
MSI-HF; transmission of MSI by coast stations to ships using NBDP
|
| 16,420
|
Distress and safety comms, radiotelephony
|
| 16,695
|
Distress and safety comms, NBDP
|
| 16,084.5
|
HF DSC
|
| 16,806.5
|
MSI-HF; transmission of MSI by coast stations to ships using NBDP
|
| 19,680.5
|
MSI-HF; transmission of MSI by coast stations to ships using NBDP
|
| 22,376
|
MSI-HF; transmission of MSI by coast stations to ships using NBDP
|
| 26,100.5
|
MSI-HF; transmission of MSI by coast stations to ships using NBDP
|
VHF (30 MHz-300 MHz)
| Freq (MHz)
|
Usage
|
| 121.5
|
EPIRB homing signal. Maritime mobile service stations may communicate with aeronautical stations for purpose of distress and urgency only.
|
| 123.1
|
Auxiliary to 121.5 MHz. For use during coordinated SAR ops.
|
| 156.3
|
VHF Channel 6. Comms between ship and aircraft stations engaged in SAR ops.
|
| 156.525
|
VHF Channel 70. Used in the MMS for distress and safety calls using DSC.
|
| 156.650
|
VHF Channel 13. Ship-to-ship comms relating to safety of navigation.
|
| 156.8
|
VHF Channel 16. Used for distress and safety communications by radiotelephony.
|
| 161.975
|
AIS 1
|
| 162.025
|
AIS 2
|
UHF (300 MHz-3,000 MHz)
| Freq (MHz)
|
Usage
|
| 406-406.1
|
EPIRB alerting channel, Earth-to-space.
|
| 1227.6
|
GPS
|
| 1530-1544
|
In addition to its availability for routine non-safety purposes, used for distress and safety (space-to-earth) in the MMSS. Includes Inmarsat-C Rx.
|
| 1544-1545
|
Use of the band (space-to-earth) limited to distress and safety ops, including feeder links of satellites needed to relay the emissions of EPIRBs and narrow-band links from space stations to mobile stations. Includes Inmarsat-C Rx.
|
| 1575
|
GPS
|
| 1626.5-1645.5
|
In addition to its availability for routine non-safety purposes, used for distress and safety (earth-to-space) in the MMSS. Includes Inmarsat-C Tx.
|
| 1645.5-1646.5
|
Limited to distress and safety (earth-to-space) operations of EPIRBs.
|
Other (3 GHz plus)
| Band
|
Usage
|
| 2.9-3.1 GHz
|
S-band radar
|
| 9.2-9.5 GHz
|
SARTs
|
| 9.3-9.5 GHz
|
X-band radar
|
See also
