Radio receiver having co-channel interference operated squelch

Details Radio receiver having co-channel interference operated squelch Radio receiver having co-channel interference operated squelch

H - Electricity

04

B

325/89

H04B 1/26 (2006.01) H03G 3/34 (2006.01)

Patent

CA 1066363

ABSTRACT: FM-radio receiver having an audio amplifier stage, provided with switching means, and a squelch circuit which is coupled to the output of the receiver demodulator, this squelch circuit comprising two cir- cuits which are constructed in such a manner that one circuit produces at an early stage an output signal when co-channel interference occurs whereas the other circuit produces an output signal which controls said switching means and which occurs only at an impermis- sible signal/noise ratio and/or an impermissible de- gree of co-channel interference. - 15 -

262395

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