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Noise-Muting FM Receiver

Noise-Muting FM Receiver

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AM IF DET AGC

AF POWER AMP

AAM FE

FM

DISCRIMINATOR

FM FE

TUNING METER

FM IF

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GND

GND

AF

OUT

Vcc

RIPPLE

FILTER

AF

IN

DET

OUT

AFC

AGC

AFC

AGC

IF

GND

METER

NC

FM

IF IN

AM

IF IN

FM/AF

BAND

SELECT

GND

GND

FM

DISCRI

NF

VOL

AM

OSC

AFC

FM

OSC

REG

OUT

FM

RF

AM

RF IN

NC

FM

RF IN

FER

GND

FM/AF

FE

OUT

Noise-Muting FM Receiver

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publish time: 2020-09-25
Circuit Everyday

Tuning the FM receiver to the FM radio station frequency, switching between stations will make a "hiss" sound, which is very annoying for the operator. The following circuit diagram helps to improve this phenomenon.

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