Gretacoder 518 |
Ansicht |
GRETACODER 518 Encryption Device
Made by Gretag, this encryption/decryption device was used between a modem and a terminal for almost all synchronous data communications at data rates up to 20 bits per second. Encryption and decryption was done automatically via a microprocessor.
Front view of unit lying atop of its protective styrofoam. |
Rear view of unit. The clear signal connector is on the left; the ciphered signal on the right. A V.24 interface is employed. |
Nameplate. |
The exact purpose of the plug is not known at this time,. Perhaps it is an enabling key of some type. |
All photos in this table via E-bay. |