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USAF High Frequency Global Communications System
Aircrews use a preliminary call as outlined in ACP-121 US Supp 2 using the collective callsign "MAINSAIL" or the HFGCS sta frequencies to provide increased "Global" coverage. The published frequency listing doe

8 KB (1,166 words) - 21:41, 15 November 2020
Trunked Radio Systems (Federal)
*Naval Vessel Trunked systems are indexed in [[US Naval Vessels]] !System Name!!Band!!System Type!!Active States

7 KB (887 words) - 16:55, 25 November 2020