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Maritime Telecommunications
Primary Mission Areas:
Services & Reporting:
Maritime Information:
DSC DISTRESS

Effective 01 August, 2013, the U. S. Coast Guard terminated its radio guard of the international voice distress, safety and calling frequency 2182 kHz and the international digital selective calling (DSC) distress and safety frequency 2187.5 kHz. Additionally, marine information and weather broadcasts transmitted on 2670 kHz will terminate concurrently. See the safety alert. Note that these frequencies are still available and in use, notwithstanding the Coast Guard's termination of the radio guard. Please contact us if you have any questions.


*** SAFETY ALERT 2 MHz DISTRESS WATCH KEEPING CLOSURE ***

HF RADIOTELEPHONE (SINGLE SIDEBAND) – DISTRESS AND INITIAL CONTACT

THIS SCHEDULE IS/WAS EFFECTIVE AUGUST 2013

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 NMF NMN NMA NMG
4125
4125
2300-1100Z
2300-1100Z
2300-1100Z
2300-1100Z
6215
6215
24 HRS
24 HRS
24 HRS
24 HRS
8291
8291
24 HRS
24 HRS
24 HRS
24 HRS
12290
12290
1100-2300Z
1100-2300Z
1100-2300Z
1100-2300Z
KHz SHIP STATION KHz COAST STATION Station and Schedule (UTC)
NMC NMO NOJ
4125 4125 24 HRS 0600-1800Z 24 HRS
6215 6215 24 HRS 24 HRS 24 HRS
8291 8291 24 HRS 24 HRS  
12290 12290 24 HRS 1800-0600Z  

KHz SHIP STATION KHz COAST STATION Station and Schedule (UTC)
Guam
6215
6215
0900-2100Z
12290
12290
2100-0900Z

Note: 8291 and 12290 KHz are available under NOJ upon request
Note: 16420 KHz is available at all stations upon request


HF RADIOTELPHONE (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



U.S. COAST GUARD COMMUNICATION STATIONS

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


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 Portsmouth/NMN and Pt Reyes/NMC.  Responses to test calls on other frequencies and at the other locations may be delayed and cannot be assured.
6312
8414.5
12577
16804.5
Note: For digital selective calling, frequencies listed are assigned. Carrier frequency is located 1700Hz below the assigned frequency.


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.