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)
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.
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
Land Mobile Channels
Listed in Monitoring Times May 2008 issue
139.9750 CG 01 140.4750 CG 02 140.7250 CG 03 141.6125 CG 04 150.7250 CG 05 141.5500 CG 06 150.3000 CG 07 162.0500 CG 08 162.1250 CG 09 162.2500 CG 10 162.3250 CG 11 163.0500 CG 12 163.1375 CG 13 164.3000 CG 14 164.3125 CG 15 164.5500 CG 16 164.5625 CG 17 164.9000 CG 18 164.9125 CG 19 165.2625 CG 20 165.3125 CG 21 165.3250 CG 22 165.3375 CG 23 166.1875 CG 24 167.9000 CG 25 168.8625 CG 26 171.2375 CG 27 172.3125 CG 28
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
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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