![Data collection / Call sign / Signals intelligence / Traffic analysis / Amateur radio / Signage / ITU prefix / Call signs in North America / Espionage / National security / Broadcast law Data collection / Call sign / Signals intelligence / Traffic analysis / Amateur radio / Signage / ITU prefix / Call signs in North America / Espionage / National security / Broadcast law](https://www.pdfsearch.io/img/278edf3eff4a04e6e54e11438b9a0ebe.jpg) Date: 2013-03-04 17:01:47Data collection Call sign Signals intelligence Traffic analysis Amateur radio Signage ITU prefix Call signs in North America Espionage National security Broadcast law | | German exploitation of Russian communications through Traffic Analysis during World War II Prepared under the direction of the CHIEF, ARMY SECURITY AGENCY 1 May 1946 WDGAS-U [Declassified and approved for release by NSA Add to Reading ListSource URL: www.numbersoddities.nlDownload Document from Source Website File Size: 583,89 KBShare Document on Facebook
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