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.
- Asset Guide by M.Cleary (linked on MT Website)
- USCG Maritime Communications Page
- USCG Allocations on the Mississippi River (and others)
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.
345.0 Operations Primary AM Mode 237.9 Operations Secondary AM Mode 326.15 Air-to-Ground Primary AM Mode 379.05 Air-to-Ground Secondary AM Mode
Marine VHF Channels
Reserved for Coast Guard use only
157.050 CH 21A 157.100 CH 22A 157.150 CH 23A 157.075 CH 81A 157.125 CH 82A 157.175 CH 83A
VHF Land Mobile [LMR] Channels
As listed in the Monitoring Times May 2008 issue
Channels can/have been identified as CG-## / CG-### / NET-## or NET-### [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 - Boston, MA 162.1250 CG 109 162.2500 CG 110 162.3250 CG 111 - Mobile, AL / Miami Beach, FL (P25 NAC293) 163.0500 CG 112 163.1375 CG 113 164.3000 CG 114 164.3125 CG 115 164.5500 CG 116 164.5625 CG 117 164.9000 CG 118 164.9125 CG 119 165.2625 CG 120 165.3125 CG 121 - Ft. Lauderdale, FL (P25 NAC293), Sector Houston-Galveston (P25 NAC293) 165.3250 CG 122 165.3375 CG 123 166.1875 CG 124 167.9000 CG 125 168.8625 CG 126 171.2375 CG 127 172.3125 CG 128
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
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.
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