Ballard, William Cyrus, Jr · New York [etc.] McGraw-Hill company, inc. · leaf 88
phonereceivers. There will usually be enough noise of one kind RECEIVING EQUIPMENT 63 or another present in the antenna circuit to adjust the pointalthough in some sets a small high-pitched electric buzzeris provided to set up an artificial signal in the antenna circuit.When the crystal detector is… … Fig. 30.—Variometer type variable inductance coil. signal. When the signal is heard, readjust the detectorpoint for maximum clearness. Unless the set has beenpreviously cahbrated with the particular antenna in use bymeans of a wavemeter the proper setting is most easilyobtained by trial. Theory of…
Radio
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