Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 106
simultaneously. When the antenna oscillates at two distinct frequencies, two waves of different length areset into motion. This is an undesirable condition, (1) because the receiving apparatus gen-erally can be tuned only to one of the radiated waves, the energy of the other being lost;(2) a… … Fig. 109.—Showinp: Complex Oscillations in Im-properly Adjusteci Transmitter. where L, and L„ = self-inductance of the primary and secondary circuits respectively, M = coefficient of coupling.It is the custom to determine the coupling from actual measurement of the radiatedwaves, or ^is is coupling…
Telegraph, Wireless
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