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Radio Security Service - this page is a stub

The Radio Security Service (RSS), also known as MI8c, was a secret British organisation, founded in 1939 at the beginning of World War II (WWII), tasked with intercepting and locating illicit radio stations operated by enemy agents (spies). The RSS was largely staffed by licenced amateur radio operators, who were skilled in recognising morse code signals from faint radio transmissions.

Apart from professional radio interceptors from a variety of backgrounds, the RSS was largely staffed licenced amateur radio operators (HAMs) that were known as Volutary Interceptors (VIs). Initially, most VIs worked from their homes and used their own (homemade) radio receivers.

  1. Wikipedia, MI8
    Visited 1 December 2023.

  2. RSS website: The Secret Listeners
    Visited 1 December 2023.

  3. Radio Security Service Memorial, History of the R.S.S.
    Amateur Radio Station GI5TKA. Visited 1 December 2023.

  4. Dirk Rijmenants, The Radio Security Service
    Cipher Machines & Cryptology/Intelligence/Security blog.
    28 April 2008.
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