Manual / Guide · 1941
R.I.P. 77 — Instructions for M-5 (Orange Diplomatic "B" Machine) (PURPLE), original 15 Jan 1941 with changes to 1 May 1942 (NARA RG 38, Box 40; edited scan by Frode Weierud)
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The Navy's PURPLE manual: daily-sequence recovery by the "Probable Word Method" on stereotyped beginnings (FYC + serial number, pp. 2-9 to 2-11), key-sequence development sheets, frequency tally worksheet A5-1 (64-page selection, image-only, no text layer)
- Author
- U.S. Navy OP-20-G
- Year
- 1941
- Type
- Manual / Guide
- Credit
- Source: https://cryptocellar.org/japan/rip-77-instructions-for-m5-purple.pdf
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R.I.P. 77 — Instructions for M-5 (Orange Diplomatic "B" Machine) (PURPLE), original 15 Jan 1941 with changes to 1 May 1942 (NARA RG 38, Box 40; edited scan by Frode Weierud)
R.I.P. 77 — Instructions for M-5 (Orange Diplomatic “B” Machine) —
(PURPLE)
Source: NARA, College Park, Md., Record Group 38, Radio Intelligence
Publications (R.I.P.), Reference: 370 27/18/06, Box 40
Editor: Frode Weierud, Crypto Cellar Research
Web Site: www.cryptocellar.org
Version: 19 February 2019