I have had a Pro-83 since last Summer (2005) and really like it. It
usually lives in the car when I am driving, and is subject to New
England's seasons.

Over the summer, it behaved fine.

This winter, though, even though the season has been rather mild, the
radio has started to act like the squelch is open full time, with
constant white noise. The scanner function properly continues to
search for active frequencies as does the signal stalker. If the
squelch was open, the scanner and signal stalker functions would
obviously be sitting on a frequency and not move.

I've tried playing with both the squelch and volume knobs, but no
change from squelch, though the volume does help "squelch" some of the
headache I can start to develop.

This white noise problem occurs regardless of whether I use
rechargable batteries or the DC adapter, and regardless of use of the
radio in the house or in the car.

The white noise has been known to subside after some time. But I ask
readers if they have also experienced this? If so, what could be
causing it? It is NOT automobile interference because the scanner
does come into the house at times and present the same problem. It
would be difficult to believe it is squelch since the rest of the
functions behave as if the squelch _is_ working properly.

What else could I be missing? Has the radio become defective? It
was purchased new, out of the box.

Thanks for any ideas/leads/hints.

Scott

Radio could be defective, but it is more likely that the "white noise"
is an actual RF signal...possibly from something recently introduced in
your area: Broadcast radio transmitter (AM, FM, TV), cellular telephone
base station, broadcast TV or radio station adding a digital
transmitter; etc. Investigate. You didn't say whether your location or
time of day affected the noise....

In article .com,
webpa wrote:
Radio could be defective, but it is more likely that the "white noise"
is an actual RF signal...possibly from something recently introduced in
your area: Broadcast radio transmitter (AM, FM, TV), cellular telephone
base station, broadcast TV or radio station adding a digital
transmitter; etc. Investigate. You didn't say whether your location or
time of day affected the noise....



Day or night. Doesn't matter. With or without antenna. Whether in the
car driving through area towns or on my desk at home.

It is something in/with the radio.

Would be _REALLY_ nice is the Optoelectronics Digital Scout had a built-in
speaker. I'd dream about that in my car... Though next best thing to no
built-in speaker would be to get the cheapest scanner it can control...

Scott

Howdy Scott.....sounds like time to get a schematic and dig out a scope.
Output (speaker) back to input and see where your noise is originating
from. Wish I had a "silver bullet" for your problem but thats where I'd
be (and have been many times).

Good job Scott! Every repair should start with a look and smell -
guess I'd assumed you'd had the covers off already.

Good listening.

Gord