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United States Coast Guard

From The RadioReference Wiki

The USCG are heavy users of the Marine VHF band; 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  CG A-G Pri Air-to-Ground Primary  AM  Federal 
379.05000  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 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

139.9750	CG 101
140.4750	CG 102
140.7250	CG 103
141.6125	CG 104
150.7250	CG 105
141.5500	CG 106
150.3000	CG 107
162.0500	CG 108 - Sector Boston, MA
162.1250	CG 109
162.2500	CG 110 - Sector Northern New England
162.3250	CG 111 - Sector Mobile, AL; Miami Beach and Key West, FL; New York, NY; Baltimore, MD; Virginia Beach, VA; Coos Bay and Winchester Bay, OR
163.0500	CG 112 - Sector New Orleans, LA; Sector Long Island, NY; Key West, FL
163.1375	CG 113 - Sector Southeast New England, Sector Corpus Christi, TX
164.3000	CG 114 - Sta Manasquan Inlet, NJ; Coos Bay and Winchester Bay, OR
164.3125	CG 115 - Sta Indian River Inlet, DE 
164.5500	CG 116
164.5625	CG 117
164.9000	CG 118 - Sta Pt Allerton, MA
164.9125	CG 119
165.2625	CG 120
165.3125	CG 121 - Miami, FL; Ft. Lauderdale, FL; Sector Houston-Galveston, TX; Philadelphia, PA; Coos Bay, Winchester Bay, and Florence, OR
165.3250	CG 122 - Port Canaveral, FL
165.3375	CG 123
166.1875	CG 124 - Sector San Francisco, Sta Rio Vista, CA
167.9000	CG 125 - Sector Sault
168.8625	CG 126
171.2375	CG 127 - Sta Cape Cod Canal, MA
172.3125	CG 128 - Repeater in Boston, MA of CG-113, also Multiple Repeaters in Oregon of CG 121

UHF 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

411.7875       CG 4xx South-East Florida
412.9250       CG 407 Sector Detroit, MI
412.9750       CG 409 Sector Jacksonville, FL / San Francisco, CA / Baltimore MD / Delaware Bay - Air Ops
413.0000       CG 410 Charleston/Savannah GA - Air Ops, Delaware Bay
413.0250       CG 411 Sector Houston-Galveston; North Bend, OR - Air Ops
416.2250       CG 4xx Mississippi / Gulf Coast
416.5500       CG 4xx
417.0000       CG 4xx

HF Operations

The US Coast Guard uses 4 different types of mechanisms for HF Radio Communications.

The first method is the use of the Dept of Homeland Security HF COTHEN ALE Network. This network supports most normal flight operations and flight following for US Coast Guard aircraft and helos and is the primary HF communications method for USCG assets.

The second method is the use of a backup USCG HF Radio network that primarly supports aircraft and helos that do not have ALE capable HF radios. The following frequencies are typically used:

5696
8983
11201

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 called TISCOM which operates on the following frequencies:

3053
4730
6709
8057
8859
8980
9034
11196
13221
15082
17988
20135.5
23072.5

Also see the the Oct 2006 Milcom column edited by Larry Van Horn in MT which describes USCG communications in detail.

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  FMN  Federal 
142.82500      USCG AuxTac2 Tactical 2  FMN  Federal 
143.47500      USCG Aux Sim Nationwide Simplex "Yankee 3"  FMN  Federal 
150.70000  149.20000   RM  USCG Aux Rpt Repeater  FMN  Federal 

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The New Repeaters as Reported/Confirmed are:

Template:Largetable |State || Repeater Tone || Location |- |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 |- |MA || 94.8 Hz || Kingston |- |MA || 103.5 Hz || Amesbury |- |MA || 114.8 Hz || Falmouth |- |MA || No PL || Temp Repeater |- |MA || 156.7 Hz || Holyoke |- |ME || 179.9 Hz || Damariscotta |- |ME || ???.? Hz || Bar Harbor |- |NC || 114.8 Hz || Lake Norman |- |NJ || ???.? Hz || Sewaren |- |NJ || 88.5 Hz || Manasquan |- |NY || 127.3 Hz || Lake George |- |NY || 131.8 Hz || NYC |- |NY || 136.5 Hz || Farmingdale |- |NY || 151.4 Hz || Montauk |- |NY || 167.9 Hz || Albany |- |NY || 186.2 Hz || Hudson |- |NY || ???.? Hz || Highland |- |OR || 156.7 Hz || North Bend |- |RI || ???.? Hz || Kingstown |- |UT || 156.7 Hz || Navajo Mtn - Lake Powell |- |VT || 110.9 Hz || Mt Mansfield - Burlington |- |}

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