Citizens band radio receiver with squelch control

Details Citizens band radio receiver with squelch control Citizens band radio receiver with squelch control

1978-10-19

1980-12-23

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Squelch

455217, 455225, H04B 118

Patent

active

042414539

ABSTRACT:
Tape deck adapter apparatus for radio reception, especially for reception of citizen band transmission having widely variable noise levels. The device consists of a receiver which is adaptable for use within a conventional tape deck for energization and operation; the receiver then includes an automatic squelch control circuit of the type which is particularly useful in receiving incoming citizen band transmissions. The automatic squelch control includes reactive means controlling input to the output audio amplifier, such reactance means being controlled by a DC feedback component as derived from the audio output signal, for application to control conduction of the reactance means, and therefore, the amplification of the audio output stage.

REFERENCES:
patent: 3140445 (1964-07-01), Myers
patent: 3451006 (1969-06-01), Grangaard, Jr.
patent: 3581210 (1971-05-01), Amfahr
patent: 3988694 (1976-10-01), Yamazaki
patent: 4048569 (1977-09-01), Yamatani

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