Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 230
e antenna circuitas shown by the curve A, Fig. 240. If the coupling be reduced- (by drawing the primaryand secondary windings apart) and a second resonance curve obtained, the two frequenciestend to merge into one as shown by curve B, Fig. 240. Further reduction of couplingbrings about the… … Fig. 241—Showing How Loose Coupling Can BeObtained With an Auto Transformer. Fig. 242—Another Method for Obtaining LooseCoupling With an Auto Transformer. A popular opinion seems to exist that the required loose coupling for radiating a pure andsharp wave can only be obtained by use of the…
Telegraph, Wireless
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