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	AM	Federal
237.90000	BM	CG AirOpsSec	Operations Secondary	AM	Federal
326.15000	M	CG A-G Pri	Air-to-Ground Primary	AM	Federal
379.05000	M	CG A-G Sec	Air-to-Ground Secondary	AM	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

Freq	Channel	Details
139.9750	CG 101	Used in coastal waters, navigable waterways and the Great Lakes
140.4750	CG 102
140.7250	CG 103
141.6125	CG 104
150.7250	CG 105	Sector Hampton Roads, VA
141.5500	CG 106
150.3000	CG 107
162.0500	CG 108	Sector Boston, MA; Sector Hampton Roads, VA
162.1250	CG 109	Sector North Bend, OR
162.2500	CG 110	Sector Northern New England; Station Morro Bay, CA
162.3250	CG 111	Sectors Key West and Miami, FL; Sector Mobile, AL; New York, NY; Sector Maryland/NCR; Station Little Creek, VA; Coos Bay and Winchester Bay, OR
163.0500	CG 112	Sector St Petersburg, FL; Sector Columbia River, WA/OR, Sector New Orleans, LA; Sector Long Island, NY; Station Chincoteague, VA; Station Wachapreague, VA; Sector Maryland/NCR; Station Annapolis, MD; Station Curtis Bay, MD
163.1375	CG 113	Sector Southeast New England; Sector Corpus Christi, TX; Sector North Carolina; Milwaukee, WI; Sta New Haven CT; Station Hobucken, NC; Station Wrightsville Beach, NC; Station Vallejo, CA; Sector Guam
164.3000	CG 114	Stations Manasquan Inlet and Cape May, NJ; Coos Bay and Winchester Bay, OR;Station Clearwater, FL Aircraft MX
164.3125	CG 115	Station Indian River Inlet, DE
164.5500	CG 116
164.5625	CG 117	Station Atlantic City, NJ;
164.9000	CG 118	Station Pt Allerton, MA; Station Emerald Isle, NC; Station Hatteras Inlet, NC; Station Ocracoke, NC; Sector Humboldt Bay, CA
164.9125	CG 119
165.2625	CG 120
165.3125	CG 121	Sectors Miami and St Petersburg, FL; Sector North Bend, OR; Sector Houston-Galveston, TX; Philadelphia, PA; Sector Hampton Roads, VA; Station Cape Charles, VA; Station Little Creek, VA; Station Milford Haven, VA; Station Portsmouth, VA
165.3250	CG 122	Port Canaveral, FL; Station Cape Charles, VA; Station Juneau, AK
165.3375	CG 123
166.1875	CG 124	Sector San Francisco, CA
167.0875	?	TX PL 167.9 Analog Only
167.9000	CG 125	Sector Sault Ste Marie, MI
168.8625	CG 126
169.5375	?	Base RX: 164.7125, CSQ, Analog Only
171.2375	CG 127	Station Cape Cod Canal, MA; Station Elizabeth City NC; Station Fort Macon, NC; Station Oak Island, NC; Station Oregon Inlet, NC
172.3125	CG 128	Repeater in Boston MA of CG-113, also multiple repeaters in Oregon of CG 121
165.2750	CG 129
171.2125	CG 130
171.4125	CG 131
172.0375	CG 150	Puget Sound
165.4625	CG 151	Port Angeles WA

VHF Canadian Border Area Regional Channels

Freq	Channel	Details
167.1125	AG-101	Toldeo OH, Lake Huron
167.6250	AG-102	Detroit MI, Saginaw River Essexville MI, Western NY, Marblehead OH
173.1000	AG-109	Western 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

Freq	Channel	Details
410.2375	?	CSQ, Analog only, Base RX: 419.2375
410.3750	CG-401	Sector Hampton Roads
410.4375	?	Base RX: 419.4375, TX PL 167.9, Analog Only
410.6375	?	Base RX: 419.6375, TX PL 167.9, Analog Only
410.8375	?	Base RX: 419.8375, TX PL 167.9, Analog Only
411.7875	CG-402	South-East Florida, Sector Hampton Roads
411.8125	CG-403
411.8375	CG-404
411.8625	CG-405
411.8875	CG-406
412.9250	CG-407	Detroit, MI
412.9500	CG-408
412.9750	CG-409	Coast Guard to Coast Guard calling channel. Jacksonville, FL / San Francisco, CA / Baltimore, MD / Delaware Bay, DE / Lake Michigan, IL/ Portsmouth, VA - Air Ops/ St Petersburg, FL
413.0000	CG-410	Charleston/Savannah GA - Air Ops, Delaware Bay
413.0250	CG-411	Houston-Galveston; North Bend, OR - Air Ops, Sector Los Angeles Long Beach - Air Ops
413.0750	?
406.6250	CG-412
406.8250	CG-413
407.2250	CG-414
407.6250	CG-415
410.1250	CG-416
410.2875	CG-417
414.0375	?	167.9 PL Analog only.
414.0625	?	NAC 68F, simplex, digital only.
414.3125	?	NAC 68F, simplex, digital only.
414.3375	?	NAC 68F, simplex, digital only.
416.2250	CG-421?	Mississippi / Gulf Coast
416.5500	CG 422?
417.0000	CG 423?
406.5000	?
406.5625	?
406.5750	?
406.6000	?
406.8000	?
406.9750	?
407.6250	?
407.9250	?
407.9750	?
408.4000	?
409.0000	?
409.1875	?
409.2000	?
409.3500	?
409.8250	?
410.0250	?
411.3750	?
413.0375	?
414.7625	?
415.6250	?
415.7750	?
415.8250	?
415.9250	?
416.3875	?
416.4750	?
416.5750	?
416.5875	?
416.6000	?
416.6375	?
416.7000	?
416.7125	?
416.8500	?
416.9250	?
416.9375	?
418.3500	?
418.4375	?
418.4500	?
419.1250	?
419.6000	?
419.6500	?
419.8000	?
419.8250	?
419.8500	?
419.9750	?

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 and GOTHAM became the primary HF communications systems for USCG assets as of 2010. In 2017, GOTHAM was merged with COTHEN to centralize HF-ALE operations.

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:

5696.0
8983.0
11201.0

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

5320.0
8337.6
10993.6
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 Global Maritime Distress and Safety System(GMDSS) alerts.
USCG MF & HF Channel Information
See the 'US Coast Guard Nets' section of the Milcom Monitoring Post

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		M	USCG AuxTac1	Tactical 1	FMN	Federal
142.82500		M	USCG AuxTac2	Tactical 2	FMN	Federal
143.47500		M	USCG Aux Sim	Nationwide Simplex "Yankee 3"	FMN	Federal
150.70000	149.20000	RM	USCG Aux Rpt	Repeater	FMN	Federal
150.70000	149.53750	RM	USCG Aux WA	Repeater (Washington State)	FMN	Federal

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The New Repeaters as Reported/Confirmed are:

State	Repeater Tone	Location	Confirmation/Reconfirmation date
AZ	107.2 Hz	Mt Ord - Pheonix
CA	110.9 Hz	Rasnow Peak
CA	136.5 Hz	Santiago Peak
CA	146.2 Hz	Otay
CA	186.2 Hz	Southern CA
CA	???.? Hz	Lake Shasta
CA	???.? Hz	Palos Verdes
CT	118.8 Hz	New Haven
CT	131.3 Hz	New London
DE	100.0 Hz	Manasquan
MA	85.4 Hz	Swampscott - Boston South
MA	94.8 Hz	Kingston
MA	97.4 Hz	Events
MA	103.5 Hz	Amesbury - Boston North	2022.08.14
MA	114.8 Hz	Falmouth
MA	No PL	Temp Repeater
MA	156.7 Hz	Holyoke
MA	167.9 Hz	Boston	2022.08.14
ME	179.9 Hz	Damariscotta
ME	???.? Hz	Bar Harbor
ME	179.9 Hz	York
NC	114.8 Hz	Lake Norman
NJ	???.? Hz	Sewaren
NJ	88.5 Hz	Manasquan
NY	127.3 Hz	Lake George
NY	131.8 Hz	New York City
NY	136.5 Hz	Farmingdale
NY	151.4 Hz	Montauk
NY	167.9 Hz	Clarksville
NY	186.2 Hz	Hudson
NY	???.? Hz	Highland
OR	156.7 Hz	North Bend
PA	131.8 Hz	Delaware Gap Area
RI	???.? Hz	Kingstown
UT	156.7 Hz	Navajo Mtn - Lake Powell
VA	No PL	Chincoteague
VT	110.9 Hz	Stowe