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Some Quantitative Experiments in Long-Distance Radiotelegraphy (Classic Reprint)
L. W. Austin
No preview available - 2019
1000 MILES Fig 27 Is amp 30 amperes absorption coefficient amperes through 25 antenna height antenna resistance approximately audible BIRMINGHAM RECEIVED BRANT ROCK RECEIVED capacity current at Brant Current of 30 current through 25 DAY OBSERVATIONS Duddell and Taylor Electrolytic Detector equation feet high flat-top antenna galvanometer given h 80 ft inductance inversely proportional kilowatts length of 1000 length of 3750 Liberia meters microamperes microfarad Miles d Km miles from Brant Miles Received Current Nautical Miles Received night signals OBSERVATIONS x NIGHT possible Provincetown radiated received antenna current RECEIVED AT BRANT RECEIVED ON BIRMINGHAM RECEIVED ON SALEM received signals received through 25 SALEM RECEIVED scout cruisers send 20 sending and receiving sending antenna current sending current sending station ships shunt readings spark gap square root Stat strength of signal Stringham Table XVI Table XVI-A thermoelement top antennas umbrella antenna variation wave length wires 2 feet Zero Absorption