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United States Coast Guard

The USCG are heavy users of the Marine VHF Channels; Channel 16 is reserved for distress, safety and calling, while channel 22A is utilized for special warnings, Marine Safety and other announcements. Other frequencies utilized vary from sector to sector.


Air Operations

New nationwide United States Coast Guard frequencies, as of January 1, 2005, are listed below. The frequencies were changed due to the mandate to vacate 380-400 MHz so that the spectrum could be used for military Trunked Radio Systems.

Frequency  Type  Alpha Tag  Description  Mode  Tag 
345.00000  BM  CG AirOpsPri Operations Primary    Federal 
237.90000  BM  CG AirOpsSec Operations Secondary    Federal 
326.15000  CG A-G Pri Air-to-Ground Primary    Federal 
379.05000  CG A-G Sec Air-to-Ground Secondary    Federal 

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Marine VHF Channels

Reserved for Coast Guard use only

157.0500	CH 21A
157.1000	CH 22A
157.1500	CH 23A
157.0750	CH 81A
157.1250	CH 82A
157.1750	CH 83A

VHF Nationwide Land Mobile [LMR] Channels

As listed in the Monitoring Times May 2008 issue
Channels can/have been identified as CG-## / CG-1## / NET-## or NET-1## [Varies by Code Plug Revision]
NAC is 293 for all channels in P25 Mode

139.9750CG 101 Used in coastal waters, navigable waterways and the Great Lakes
140.4750CG 102
140.7250CG 103
141.6125CG 104
150.7250CG 105 Sector Hampton Roads ,VA
141.5500CG 106
150.3000CG 107
162.0500CG 108Sector Boston, MA, Sector Hampton Roads ,VA
162.1250CG 109
162.2500CG 110Sector Northern New England; Sta Morro Bay, CA
162.3250CG 111Sector Mobile, AL; Miami Beach and Key West, FL; New York, NY; Baltimore, MD; Station Little Creek, VA; Coos Bay and Winchester Bay, OR
163.0500CG 112Sector New Orleans, LA; Sector Long Island, NY; Key West, FL, Station Chincoteague ,VA, Station Wachapreague ,VA
163.1375CG 113Sector Southeast New England, Sector Corpus Christi, TX, Sector North Carolina Milwaukee, WI, Sta. New Haven CT, Station Hobucken ,NC, Station Wrightsville Beach ,NC
164.3000CG 114Sta Manasquan Inlet and Cape May, NJ; Coos Bay and Winchester Bay, OR
164.3125CG 115Sta Indian River Inlet, DE
164.5500CG 116
164.5625CG 117
164.9000CG 118Sta Pt Allerton, MA, Station Emerald Isle ,NC, Station Hatteras Inlet ,NC, Station Ocracoke ,NC
164.9125CG 119
165.2625CG 120
165.3125CG 121Miami, FL; Ft. Lauderdale, FL; Sector Houston-Galveston, TX; Philadelphia, PA; Coos Bay, Winchester Bay, and Florence, OR, Sector Hampton Roads VA, Station Cape Charles VA, Station Little Creek VA, Station Milford Haven VA, Station Portsmouth VA,
165.3250CG 122Port Canaveral, FL, Station Cape Charles VA
165.3375CG 123
166.1875CG 124Sector San Francisco, CA
167.9000CG 125Sector Sault Ste Marie, MI
168.8625CG 126
171.2375CG 127Sta Cape Cod Canal, MA, Station Elizabeth City NC, Station Fort Macon, NC

, Station Oak Island ,NC, Station Oregon Inlet ,NC

172.3125CG 128Repeater in Boston, MA of CG-113, also Multiple Repeaters in Oregon of CG 121
165.2750CG 129
171.2125CG 130
171.4125CG 131
172.0375CG 150Puget Sound
165.4625CG 151Port Angeles WA

VHF Canadian Border Area Regional Channels

167.1125AG-101Toldeo OH, Lake Huron
167.6250AG-102Detroit MI, Saginaw River Essexville MI, Western NY, Marblhead OH
173.1000AG-109Western NY
173.5375 AG-113 Buffalo NY

UHF Nationwide Land Mobile [LMR] Channels

As reported in the Monitoring Times Fedcom Blogs
Channels can/have been identified as CG-4## or NET-4## [Varies by Code Plug Revision]
NAC is 293 for all channels in P25 Mode

410.3750CG-401 Sector Hampton Roads
411.7875CG-402South-East Florida, Sector Hampton Roads
412.9250CG-407Detroit, MI
412.9750CG-409Coast Guard to Coast Guard calling channel.
Jacksonville, FL / San Francisco, CA / Baltimore, MD / Delaware Bay, DE / Lake Michigan, IL/ Portsmouth, VA/ - Air Ops
413.0000CG-410Charleston/Savannah GA - Air Ops, Delaware Bay
413.0250CG-411Houston-Galveston; North Bend, OR - Air Ops
416.2250CG-421?Mississippi / Gulf Coast
416.5500CG 422?
417.0000CG 423?

HF Operations

Operationally, the US Coast Guard divides the US into 2 separate areas. LANTAREA consists of USCG Districts 1, 5, 7, 8 and 9. PACAREA includes the western Districts, 11, 13, 14 and 17. HF communications, as well as a number of other missions are the responsibility of the two "CAMS." USCG CAMSLANT is the largest of the 2 CAMS with approx 178 active duty, reserve and auxiliary personnel. Located on the campus of Naval Security Group, Northwest in Chesapeake, VA and its remote transmitter site, NMN is located in the old town of Pungo, VA now part of Virginia Beach, VA. CAMSLANT covers Sea Areas 3 and 4 from Brownsville, TX to the Maine/Canadian border. CAMSLANT has 3 additional subordinate commands, each with a separate transmit and receive site. COMMSTA Boston (NMF), COMMSTA Miami (NMA), and COMMSTA New Orleans (NMG). CAMSLANT also controls a NAVTEX transmitter site on Charleston, SC (NME). All HF transmissions such as flight following, WEFAX, SITOR, GMDSS/DSC, NAVTEX, etc originate from CAMSLANT and are broadcast from one of the 4 remote transmitter sites.

USCG CAMSPAC is located in PT Reyes, CA and is the smaller of the 2 CAMS. The mission responsibilities are virtually identical to that of CAMSLANT. CAMSPAC also has remote transmit and receive sites and has some support functions for COMMSTA Kodiak, AK.

All are under the Command of either LANT-6 or PAC-6, a CAPT, (O-6) and they are e responsible to the Flag Officer Commanding, the CG-6 Directorate, C4IT branch.

The USCG uses 4 different types of mechanisms for HF Radio Communications. Note, all voice emissions are USB regardless of frequency.

The first method is the use of the Customs Over The Horizon Enforcement Network COTHEN ALE Network. This network supports the majority of both normal flight operations and flight following as well as operational coordination for US Coast Guard fixed and rotary wing aircraft. COTHEN became the primary HF communications system for USCG assets as of 2010.

The next method is the use of a secondary USCG HF Radio network that primarily supports Fixed and rotary wing aircraft which are not equipped with COTHEN capable HF radios. The following frequencies are available although 5 and 8 mHz are used most:


Third, the USCG uses a set of HF frequencies for tactical radio communications between aircraft, base stations, and USCG Cutters:

11197.4  (Mobile AL)

And finally, the USCG has a network which operates on the following frequencies:


Also see the following links for more on USCG HF Operations;

USCG Auxiliary

The USCG has moved to Narrowband channels and abandoned the older wideband channels.

Frequency  Input   
Type  Alpha Tag  Description  Mode  Tag 
138.47500      USCG AuxTac1 Tactical 1    Federal 
142.82500      USCG AuxTac2 Tactical 2    Federal 
143.47500      USCG Aux Sim Nationwide Simplex "Yankee 3"    Federal 
150.70000  149.20000   RM  USCG Aux Rpt Repeater    Federal 

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The New Repeaters as Reported/Confirmed are:

StateRepeater ToneLocation
AZ107.2 HzMt Ord - Pheonix
CA110.9 HzRasnow Peak
CA136.5 HzSantiago Peak
CA146.2 HzOtay
CA186.2 HzSouthern CA
CA???.? HzLake Shasta
CA???.? HzPalos Verdes
CT118.8 HzNew Haven
CT131.3 HzNew London
DE100.0 HzManasquan
MA85.4 HzSwampscott
MA94.8 HzKingston
MA103.5 HzAmesbury
MA114.8 HzFalmouth
MANo PLTemp Repeater
MA156.7 HzHolyoke
ME179.9 HzDamariscotta
ME???.? HzBar Harbor
ME179.9 HzYork
NC114.8 HzLake Norman
NJ???.? HzSewaren
NJ 88.5 HzManasquan
NY127.3 HzLake George
NY131.8 HzNYC
NY136.5 HzFarmingdale
NY151.4 HzMontauk
NY167.9 HzClarksville
NY186.2 HzHudson
NY???.? HzHighland
OR156.7 HzNorth Bend
PA131.8 HzDelaware Gap Area
RI???.? HzKingstown
UT156.7 HzNavajo Mtn - Lake Powell
VANo PLChincoteague
VT110.9 HzStowe

Related Links

Return to DB page: Coast Guard
Return to Wiki page: HF Military Communications, Common Frequencies

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