Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 203
^-^<^ Fig. 213—Another Method for exciting Oscillationsin an Antenna by Buzzer. (1) The natural or fundamental wave length of the aerial;(2).The wave length of the closed oscillation circuit;(3) The wave length of the radiated wave. After the open and closed circuits have been coupled, we must… … Fig. 214—Buzzer Excitation Circuit InductivelyCoupled to an Aerial. (1) Purity and sharpness of the radiated wave; (2) The decrement of damping. (o) Measurement of the Open Circuit. One method of setting the aerial intoexcitation and measuring the natural or fundamental wave length was shown inFig.…
Telegraph, Wireless
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