How FM receiver decide channels frequency?

[Boki]

Hi All,

When FM receiver scan channels, it is doing SNR thresholding job ?

so... FM receiver has a AD to calculate the audio quality ??


Best regards,
Boki.

 

[mc]

I think it is just looking for IF signal strength.

 

[Joel Kolstad]

When FM receiver scan channels, it is doing SNR thresholding job ?

In all likelihood it just looks for signal strength, since with FM if you have
a signal much stronger than background noise, it's a good bet the SNR is
recent. (This isn't the case with, e.g., spread spectrum systems.)

so... FM receiver has a AD to calculate the audio quality ??

Probably more like a comparator... maybe a window comparator if they're fancy.
These count as 1 bit or 2 bit ADCs if you'd like, though.

---Joel