Re:Why does FM sound better than AM?
by tomfanning on Monday October 14, 2024 @05:44AM
(#41835882)
In SSB there is no carrier transmitted. Two SSB stations on top of each other sounds exactly like two microphones mixed.
Interesting. However, if one of those stations runs on a slightly different frequency, I guess its output would be garbled, correct? Like I guess SSB receiver just shifts down the band by a constant?
If it's kind of close it just sounds like someone talking in a slightly lower or higher pitch. It can still be pretty intelligible with the frequency slightly off. Eventually it gets very distorted though and you start losing a big part of the waveform entirely. Try listening in to some websdrs and you'll see what it's like.
Yes. Assuming signal strengths for both are comparable. Say, within 20 dB of each other.
> (possibly garbled if carrier wave was off)
Nah. If both stations have sufficient energy fall into receiver's bandwidth window (IF filter for analog receiver), no garbling. If one of stations has carrier sufficiently off to fall entirely outside IF, only other will be audible.
You are probably thinking about SSB, where two stations with carrier offset indeed produce weird sounding interference.
https://en.wikipedia.org/wiki/Single-sideband_modulation