Homepage Crypto Index Enigma Hagelin Fialka Siemens Philips Nema Racal Motorola STK Transvertex Gretag HELL Telsy TST Mils AT&T Tadiran USA USSR UK Voice Hand Mixers Phones Spy sets Burst encoders Intercept Covert Radio PC Telex Agencies Manufacturers Donate Kits Shop News Events Wanted Contact About Links A-620 OTT cipher machine (mixer) - wanted item The A-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.   References Mils Elektronik, ME-640 Off-Line Telex Cipher System User Manual (English). 14 pages. Date unknown, but probably 1986. 1 Document kindly supplied by Mils Electronic. Further information About OTP and OTT The Vernam principle 5-Level Baudot code Other Mils cipher machines About Mils Elektronik (history) Main crypto page Any links shown in red are currently unavailable. If you like this website, why not make a donation? © Copyright 2009-2013, Paul Reuvers & Marc Simons. Last changed: Thursday, 17 July 2014 - 09:01 CET