HFU HF Underground
Loggings => Spy Numbers => Topic started by: resonant.interval on May 14, 2012, 2034 UTC
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this was on 12 may 2012 in the evening, only lasted a few minutes.
rx in new orleans area, louisiana
ended with the word "OUT".
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this is happening again now, alpha-numeric mix, mostly alphabet but some numbers.
no 5 character groups - strings of over 20 characters in succession.
observing from about 0000 UTC until 0006. Ended just before 0007.
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That's the HFGCS.
http://wiki.radioreference.com/index.php/USAF_High_Frequency_Global_Communications_System
http://www.milaircomms.com/ghfs.html
http://www.globalsecurity.org/military/systems/aircraft/systems/hfgcs.htm
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Thanks for the info...
Have heard the 5 letter groupings around 6700 khz in the evenings here and always wondered what their origin was.
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Just for clarification the HF-GCS is not a numbers station. There are many types of encoded voice transmissions that are not numbers stations.
T!