Navsup inst 4440

The CSP-62, RIP-5 or Underwood Code Machine "RIP-5" stands for "Radio Intelligence Publication #5" "Underwood Code Machine" is written just below the space-bar. One of the few surviving typewriters custom manufactured lớn transcribe Japanese radio communications.

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In 1924 the Navy had only two operators who knew Japanese Morse. Safford contracted with the Underwood Typewriter Company khổng lồ build special typewriters that printed kamãng cầu. The keys were cleverly arranged so that, at least for the lowercase character set, the kamãng cầu keys were located in the same place as the corresponding International Morse letter would be on a regular typewriter. When an operator heard _._., he would just hit the key where "C" would normally be, and the machine would print the kamãng cầu for NI. The machines cost a whopping $160 apiece, and only about forty were acquired, paid for out of the Office of Naval Intelligence slush fund...

Stephen Budiansky, BATTLE OF WITS: THE COMPLETE STORY OF CODEBREAKING IN WORLD WAR II, A Touchstone Book, Simon và Schuster, New York (2002). Pages 36-37.

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Famous aước ao communications intelligence veterans, the RIP-5 was a machine that greatly simplified interception of Japanese transmissions. Though its acrynym stood for "Registered Intelligence Publication," the RIP-5 consisted of a typewriter modified to reproduce the kana for which Japanese Morse code letters stood. It had been developed at the initiative sầu of Laurence Safford in 1924, paid for from the ONI slush fund, và made by the Underwood Typewriter Company, whose officials worked out the mechanism in cooperation with Safford. The first ones cost $160 each. Intercept veterans rehotline using RIP-5s in Shangnhị as early as 1929. Operators could record Japanese radio transmissions more easily, often faster than Imperial Navy radiomen could draw the kana themselves...

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John Prados COMBINED FLEET DECODED - THE SECRET HISTORY FO AMERICAN INTELLIGENC AND THE JAPANESE NAVY IN WORLD WAR II. Random House, Thành Phố New York (1995). Page 82.

See publication #607 from the U.S. Naval Cryptongắn gọn xúc tích Veteran"s Association, "Ships Store."

NARA RG 38, RIP (Radio Intelligence Publications) Finding Aid Archives II in College Park, MD


Underwood Code Machine - Serial Number xxxx
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Stereo Pair - Right Eye for Cross-Eyed Viewing
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Stereo Pair - Left Eye for Cross-Eyed Viewing

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