WWII 1942 US Army TM 11-340 Telephone Central Office Set TC-2 Manual + 1944 Supplement

Original WWII-era U.S. War Department Technical Manual TM 11-340, Telephone Central Office Set TC-2, dated 19 October 1942.

This manual covers the military telephone central office equipment used for field communications and includes technical information on components such as switchboard equipment and associated circuitry.

A particularly nice feature is the original 15 August 1944 supplement to TM 11-340, which was intended to be secured inside the front cover and contains wartime corrections and updates to the 1942 manual.

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