What can I do to cut the white noise on the RDA5807M fm radio?

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coder1448
Posts: 1
Joined: 24 Apr 2022 15:50

What can I do to cut the white noise on the RDA5807M fm radio?

#1 Post by coder1448 » 24 Apr 2022 16:25

How can we turn off the sound at an empty (noise) frequency on the fm radio, what should I use for this?

The FM module I am using is RDA5807M

example :

vzssssssssssssssssssssssssssssssssssssss (white noise)
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diode_blade
Posts: 172
Joined: 24 Aug 2014 17:55
Location: Sheffield

Re: What can I do to cut the white noise on the RDA5807M fm radio?

#2 Post by diode_blade » 29 Apr 2022 08:54

You need what is called a "Sqelch circuit", in between the audio output and the speaker.
link below, just search for FM radio squelch circuits.

https://makingcircuits.com/blog/audio-squelch-circuit/
"When the bugs strike it's no good bashing your head against a brick wall, you might damage the wall"
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