RadioBanter - View Single Post

February 19th 05, 05:32 AM

In article .com,
wrote:

Most radios have a bit higher distortion when using sync, plus there
is always going to be a slight frequency offset. Some radios will
growl trying to get the sycn. Throw the audio out on a spectrum
analyzer and you might spot a weak tone artifact due to the sync. Use
it when it sounds better, otherwise leave it off.

Sometimes there is more noise "under" one sideband than the other, so
you might use sync and pick the quieter sideband. Adjacent channel
splatter would be a good example of noise under one sideband and not
the other.

I probably use sync a few percent of the time.

I don't own an audio spectrum analyzer so I'll have to stick to my
ears. Using my ears I don't notice any additional distortion from using
the sync. I own four different makes of radios that have sync and have
not noticed the additional distortion of which you speak. The default
for me is to leave it on. Usually I only turn it off for band scanning
or seeking because I don't want to wait for it to lock.

Sounds like your radio needs adjustment or you are just hearing an
interfering signals heterodyne made apparent by the injected carrier.

--
Telamon
Ventura, California