The USASADF Worldwide Radio Direction Finding Net
The USASADF Net is about the United States Army Security Agency (USASA) people who served with the High Frequency Radio Direction Finding (HFDF) Detachments and Sites Worldwide from the end of World War II through the end of the Cold War.
US Army Security Agency, Radio Direction Finding Sites and Detachments, SIGINT, COMINT, Signals Intelligence, DF, RDF, HFDF, SIT, Special Identification Techniques, Radio Fingerprinting, RFP, AN/TRD-4s, AN/TRD-15 and 23s
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