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United States Coast Guard
U.S. Department of Homeland Security

HF Distress and USCG Contact Frequencies

HF DIGITAL SELECTIVE CALLING
 
Portsmouth/NMN, Boston/NMF, Miami/NMA, New Orleans/NMG, Pt. Reyes/NMC, Honolulu HI/NMO, Kodiak AK/NOJ
4207.5 DSC test calls on 4207.5 kHz will be automatically acknowledged from any of the US Coast Guard Communication Stations listed below EXCEPT USCG SECTOR Guam.
6312
8414.5
12577
16804.5

Note: For digital selective calling, frequencies listed are assigned. Carrier frequency is located 1700Hz below the assigned frequency.

Station MARITIME MOBILE SERVICE IDENTITY
Universal US Coast Guard shore-based identity 003669999
USCG Communications Command, Chesapeake VA/NMN 003669995
USCG Communications Command, remotely keying transmitters at Boston/NMF 003669991
USCG Communications Command, remotely keying transmitters at Miami/NMA 003669997
USCG Communications Command, remotely keying transmitters at New Orleans/NMG 003669998
USCG Communications Command, remotely keying transmitters at Pt. Reyes CA/NMC 003669990
USCG Communications Command, remotely keying transmitters at Honolulu HI/NMO 003669993
USCG Communications Command, remotely keying transmitters at Kodiak AK/NOJ 003669899
USCG Sector Guam/NRV 003669994


HF RADIOTELEPHONE (SINGLE SIDEBAND) – DISTRESS AND INITIAL CONTACT

Authorized for the handling of Distress message traffic and initial contact with United States Coast Guard Long Range Communication facilities.

KHz SHIP STATION KHz COAST STATION Station and Schedule (UTC)
NRV (Guam) NOJ (Kodiak AK)
4125 4125 - 24 HRS
6215 6215 0900-2100Z 24 HRS
8291 8291 - 24 HRS
12290 12290 2100-0900Z -

Note: 12290 KHz are available under NOJ upon request

HF RADIOTELEPHONE (SINGLE SIDEBAND) - WORKING CHANNELS

These channels are available at all Coast Guard Long Range Communication Facilities for traffic handling purposes after initial contact is established on the HF Radiotelephone (Single Sideband) - Distress and Initial Contact frequencies.  These coast station frequencies are also used for scheduled broadcasts of marine weather forecasts.

ITU CHANNEL KHz SHIP STATION KHz COAST STATION

424

4134

4426

601

6200

6501

816

8240

8764

1205

12242

13089

1625

16432

17314


Contact U.S. Coast Guard Communications Command (COMMCOM) here. USCG COMMCOM is responsible for HF and MF communications services to mariners.

OTHER DISTRESS RESOURCES

Amateur radio Maritime Mobile Service Network on 14,300 kHz. ITU and FCC regulations
allow a mariner in distress to use any means possible to attract attention to obtain help, including
amateur radio frequencies.

U.S. Coast Guard Rescue Coordination Centers emergency telephone numbers. 24 hour
Regional Contacts for Emergencies. Use this if you have access to cell or satellite telephone.

DISCONTINUED SERVICES

HF RADIOTELEX (SITOR OR NARROW BAND DIRECT PRINTING)

Effective 31 March 2012, the Coast Guard discontinued ALL ship/Shore/Ship SITOR services except for marine information broadcasts.

HF SINGLE SIDEBAND VOICE

Effective 7 February 2022, the U.S. Coast Guard ceased monitoring all High Frequency (HF)
shortwave voice distress frequencies within the contiguous United States and Hawaii except
for marine information broadcasts.

This information and schedule is/was effective May 2023.