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 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 Gretag AG, Brochure Further information Other Gretag and Gretacoder systems 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, 12 July 2012 - 07:48 CET