Tunable scanning radio receiver

Details Tunable scanning radio receiver Tunable scanning radio receiver

H - Electricity

03

J

325/117, 365/8

H03J 7/18 (2006.01) H03J 5/02 (2006.01) H03J 7/28 (2006.01)

Patent

CA 1073531

ABSTRACT A scanning radio receiver that is electronically tuned for station selectivity over a given band of fre- quencies. Varactor diodes contained in the RF and local oscillator stages of the scanning receiver circuitry are voltage controlled to select a finite number of different station frequencies within said given frequency band. A scan control circuit composed of several sections each including a potentiometer applies discrete d.c. voltages corresponding to the selected station frequencies to said varactor diodes. Digital means are employed to sequentially actuate the scan control circuit sections under the control of a received signal.

252924

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