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Gretacoder 803
Off-line teleprinter encryptor - This page is a sub

The Gretacoder 803 was a semi-portable off-line encryption device for teleprinter signals, developed by Gretag in Regensdorf (Switzerland) around 1970.

References
  1. Gretag AG, Brochure
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Crypto Museum. Last changed: Thursday, 12 July 2012 - 06:48 CET.
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