KFF - 58 |
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KFF-58 The model number of this machine is derived from the words "Krypto-Funk-Fernschreiber" It was made by GRETAG AG for the Swiss Army. The man behind this development was Dr. Gretener, the owner of GRETAG AG. As the model number suggests, it was made in 1958 and it was taken out of service and declassified in 1995. The KFF 58 incorporates a teletypewriter with a "14-element script" and an adapted crypto element.
Other machines in this series was the previous model, the TC-53 and the successor model KFF-61. Similar machines made by GRETAG are the ETK-47, ETK-50 and T-55.
KFF-58 prototype Sample page from manual.