U.S. War Department

War Dept. Technical Manual TM 11-498: Fundamentals of Telephony and Manual Telegraphy. "Restricted"

Washington, DC: GPO, 1944. 144, wraps, figures, pencil and blue pencil notes on several pages, covers quite worn, small tears at spine, stamps on front cover. Lower corner of covers and some pages creased, small pieces missing at top and bottom of spine. Chapters cover sound, voice transmission, circuit-diagram reading, telephone transmission equipment, signalling equipment, auxiliary equipment, local-battery switchboard line circuits, common-battery telephones, telephone relays, and single line telegraphy, among other topics. Condition: fair.

Keywords: Telephones, Telegraphs, WWII, Technical Manuals

[Book #12476]

Price: $31.50