continued... Here were some American machines used in World War II. The little machine on the left was a portable unit. 140,000 were built during WWII. They were also utilized in the Korean and Vietnam Wars, as well. The bigger one to the right was the first production model of an Electric Cipher Machine. The Navy called it CSP-889 (later renamed to ECM Mark II) and the Army called it SIGABA.

They also could do voice encryption. We believe this was a model of a SIGSALY machine that produced encoded records. There were two turntables that synchronized the sending and receiving ends. When played on a regular record player, they just sounded like random noise. A matching record at the receiving end could unscramble them. They held about 12-minutes of content. They were in service from 1943 to 1946.




