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KW-7 was a highly secure on-line cipher machine, developed by the US National Security Agency (NSA) around 1960, and built by Honeywell in Tampa (Florida, USA). The device was used for low-level tactical offline teleprinter traffic and was the main cipher machine of the US Navy until the 1990s.
Widely used with more than 14,000 units produced, the KW-26 superseded the crypto machines of World War II by using electronic shift registers instead of mechanical rotors. The KW-7 (the smaller unit on top) provided station-to-station communications and featured solid-state circuitry, a rugged housing, and a sealed lid to prevent electro ...
KW-7. The Orestes cryptosystem employed the KW-7. It was an on-line, send/receive crypto unit installed in shore stations and aboard ships. In one application, it was used for ship to shore and for intership radioteletype communications.
The full duplex equipment consists of 3 identical key generators, 2 synchronizers, an alarm assembly, and 2 power supplies. 0-100kc frequency range. Used with HY-2 vocoder and other equipment for long haul voice which is extended to local subscribers by means of KY-3 equipment.
The KW-7 was the most widely used code machine in the free world. It was developed by NSA for use in portable-tactical environs and was designed as a mobile crypto unit versus the other heavy cumbersome US machines in use.
One of the first fully electronic US cipher machines was the KW-7. It was introduced around 1960 and was used by the US Navy, NATO, Australia and New Zealand, and by the Foreign Office of several friendly nations.
First generation NSA systems were introduced in the 1950s and were built on the legacy of NSA's World War II predecessors and used rotor machines derived from the SIGABA design for most high level encryption; for example, the KL-7.
