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HF-GCS stations operate on “core” frequencies to provide increased "Global" coverage. The published frequency listing does not reflect complete system frequency authorizations. These published frequencies will be used for initial contact, EAM broadcasts, and short term C2 phone patch and message delivery. Other extended or special services will be moved to each station’s available "discrete" frequencies.
Primary HF-GCS Frequencies - 24 hours 8992 11175
Back up HF-GCS Frequencies - DAY 13200 15016
Back up HF-GCS Frequencies - NIGHT 4724 6739
The Air Force Eastern Test Range (AFETR) HF Network may be used as a backup to GLOBAL. They may be contacted on USB 10780 (primary) and 20390 (secondary). Call sign is CAPE RADIO.
EAM's or Emergency Action Message. Another very important aspect of the GHFS is the transmission of EAM's. EAM's are the coded military orders or bulletins that have the highest priority. When EAM's are broadcast, ALL other users of the system are to standby. If you hear a voice giving a long series of letters phonically this is an EAM.
SKYKING messages are special EAM's. These presumably could be the nuclear go/no-go codes. There was a higher than normal number of EAM's and SKYKING messages being transmitted after the attackes of 9/11/01. Urgent SKYKING messages are repeated three or four times instead of the usual two. SKYKING is a group callsign, meaning "Any this net." "Do not answer" is the standard procedure of self-authenticating broadcasts, meaning that recipients don't need to give away their positions or existence by challenging the orders. While tuned to any of the GHFS frequncies and hear "SKYKING SKYKING Do not answer" you can bet you're hearing a very important, highest priority, and heavily encrypted message!
Originally posted by gncnew
The freq you found is supposed to be the broad "alert" freq for everyone and then individual units are supposed to move to "discrete freqs" for more info.
May be able to see if it's a nation wide thing or just a specific base..
Originally posted by hinky
If your a ham, you'll instantly recognize the NATO phonetic alphabet
This is some cool double aught stuff.