TM 11-380: Converter M-209, M-209-A, M-209-B (Cipher)

TM 11-380 Converter M-209, M-209-A, M-209-B (Cipher)

TM 11-380

Converter M-209, M-209-A, M-209-B (Cipher)

Army · TM · May 1947 · 188 pages

About

Section DESCRIPTION 1. Scope a. This Technical Manual covers the description, operation, maintenance, repair, and emergency de- struction of Converter M—209—(*). The manual sets forth detailed instructions on the prescribed method of concealing the message rotor alinement (internal message indicator) + used to encipher a message. It also includes a list of security precautions to be observed when Converter M—209-—(*) is used. In- formation on preparation of cipher keys for use with the converter is given in the appendixes. b. Converter M-—209-—(*) represents Converters M-—209, M—209—A, and M—209-B, which are treated tags throughout this manual. a » COOMFIDENT LAd emonsicut' Phis' ‘ma Hupl. infe OE ENG where a new term is used for BATFE Pa plowed by PEAK ol in parentheses. HCCTHINT.CH

DesignationTM 11-380

EditionMay 1947

StatusSuperseded

Pages188

FunctionComms Signal

CollectionHistoric

Public domain (U.S. Government work)

References 7

TM 388-405Not in the Vault
TM 3-220Not in the Vault
TM 11-469Not in the Vault
TM 38-650Not in the Vault