HFU HF Underground
Loggings => Utility => Topic started by: SirTmofBates on November 04, 2019, 2232 UTC
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"Drag Race", who identifies himself at the end of the transmission, is phonetically reads out what I can only assume to be a coded message. Didn't catch the beginning of the transmission, but managed to catch the end, which sounded like two DTMF tones.
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DRAG RACE was a USAF HFGCS ground sta simulcasting EAMs on HFGCS, wich includes 4724. The DTMF tones are used to enable/disable remote transmitter sites as pretty much any HFGCS sta can operate any/all tx site via autovon/dsn, autovon/dsn being a secure version of pots, aka plain old telephone service.
This is what the Elkhorn Communications Detachment tx site (a few miles nw of OFFUT) looks like;
https://www.offutt.af.mil/News/Features/Display/Article/312829/rural-communications-site-has-global-mission/
https://www.facebook.com/Det2Elkhorn
HFGCS
https://wiki.radioreference.com/index.php/USAF_High_Frequency_Global_Communications_System
EAMs etc
https://www.cia.gov/library/readingroom/docs/CIA-RDP69B00041R001900130012-2.pdf