Electronic cipher machine 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.

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.

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 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-magnetic emanations. Convicted spy John A. Walker compromised the KW-7 by selling its key cards to the Soviets from 1967 to 1985. KW-7: 38.1 cm x 36.5 cm x 28.5 cm. (L x W x H)

TSEC/KW-7 Cabinet Info. Back to Main Crypto Page; Back to Main US Naval Communications Page; Please send me email with more info, corrections, suggestions, etc.; Motivation - gathering info that might be useful in fabricating a KW-7 look-alike for museum, etc. display

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.

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This page discusses the KW-7, an early electronic cipher machine used by the U.S. Navy.

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2010年1月13日 · KW 是德语 Kalen wochen 的意思，表示日历周，KW7/2010也就是2010日历上的第七周。