"High Power Arc Radio Stations Equipped by the Federal Telegraph Company" and "Computation of Position of Equilibrium of Umbrella Antenna System Under Dead Load"
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Description
Map of the world showing all of the Federal Telegraph Company high power stations (more than 30 kw) and their connections. "The Federal Telegraph Company manufactures Arc Radio Transmitters varying in size from 2 to 1,000 Kilowatts. This map shows only the larger radio stations using Federal Arc Radio Transmitters. No stations of less than 30 Kilowatts are shown. A large number of smaller transmitters have been built for merchant and naval vessels and small land stations." Features three photographs: "U.S. Naval High Power Radio Station, San Diego, California" (2003-36-149a); "1,000 Kilowatt Arc Converter" (copy in the Federal Telegraph collection 2003-37-?); and "30 Kilowatt Arc Converter" (2003-36-149b). Oversized reference chart entitled "Computation of Position of Equilibrium of Umbrella Antenna System Under Dead Load" (No. 10334) (Undated)
Type
image
Identifier
4103E250-1D79-48BD-A51A-744639182682 2003-36-149
Subject
Antennas (Electronics) (LCSH) Arc converter Electric arc (LCSH) Federal Telegraph Company--History Maps Radio stations (LCSH) Reference sources (LCSH) Telegraph, Wireless (LCSH)
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