Ancient Web: The Numbers Racket Freezes the Spy Radio Scene

The Numbers Racket is an online copy of a 1998 CD-ROM documenting shortwave numbers stations, call patterns, Morse systems, schedules, recordings, and listener observations as they were understood by the monitoring community at the end of the 1990s.

https://switchboardtechservices.com/articles/ancient-web-the-numbers-racket-freezes-the-spy-radio-scene-in-1998/

By Switchboard Tech Services · Originally published 2026-09-05

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