Plural band scanning radio with direct switch of RF amplifying t

Details Plural band scanning radio with direct switch of RF amplifying t Plural band scanning radio with direct switch of RF amplifying t

1977-06-13

1979-06-05

Griffin, Robert L.

325459, H04B 132

Patent

active

041575059

ABSTRACT:
A signal-seeking radio receiver is disclosed which can be manually programmed to receive a number of different channels in any combination with three bands with a minimum of switching circuitry. The receiver has pre-IF circuitry which includes at least one PNP transistor associated with each band, the base terminal of each transistor being connectable to one output of a solid state counter for controlling the band of operation of the receiver.

REFERENCES:
patent: 3824475 (1974-07-01), Pflasterer
patent: 3895303 (1975-07-01), Imazeki et al.
patent: 3940697 (1976-02-01), Morgan
patent: 3996521 (1976-12-01), Owens
patent: 3996522 (1976-12-01), Koch et al.
patent: 4000470 (1976-12-01), Okada

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