Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U.S. seacoast defenses (1902)
United States. War Dept, Anderson, George Lucius, 1849-1934 · Washington, Govt. Print. Off. · leaf 183
174. Common Battery, 10 Stations. coils on either side of the transmitter circuit to prevent cross talk when morethan two stations communicate. a. The Holtzer-Cabot system is extensively used (fig. 175). … TELEPHONY. 133 (H) A CEXTRAIi STATIOIS^ SYSTEM 1. Sometimes required, is shown for—40 line drops, 1 per station, ^4.10 clearing-ont drops, B.10 plugs with double cords, C.10 listening keys, E, for 10 connections.10 sets ringing keys, F, for 10 connections. Operators transmitter.Operators…
Electric machinery · Searchlights · Coast defenses
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