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OTT cipher machine (mixer) - wanted item

The ME-620 was an offline cipher machine for teleprinter networks (telex), developed by Mils Elektronik in Mils (Austria) in the mid-1970s. The machine offers unbreakable encryption, using One-Time Tapes (OTT), as well as algorithm-based encryption, using the built-in key generator.

The image on the right shows a typical ME-620 machine. As present, no further information about this device is available.   

Help required
At present we have no further information about this device. Furthermore, we are still hoping to add it to our collection in due course. If you have such a device or any related information, and are willing to donate it to Crypto Museum, please contact us.

  1. Mils Elektronik, ME-640 Off-Line Telex Cipher System
    User Manual (English). 14 pages. Date unknown, but probably 1986. 1
  1. Document kindly supplied by Mils Electronic.

Further information
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Crypto Museum. Created: Friday 28 August 2015. Last changed: Saturday, 24 February 2018 - 13:35 CET.
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