If you haven't already tried this, consider the possibility of a failing
battery.

My radio is an ATR 720b, which I believe is made by Dittel, and has four
user-selected presets selected by a four-position rotary knob. As the
voltage drops, first one then another of these becomes unusable. I've
not checked whether this is related to the frequency or to the preset
position, but changing to a freshly charged battery fixes the problem.
If your battery is no longer taking a full charge, this might be your
problem.

Dixie Sierra wrote:
The other kids didn't want to play with me today because my radio is
unreadable on 123.3. It seems to be fine on the local unicomm freq of
123.00. I have not tested on other freq's.

It doesn't sound like something I'll be able to fix. Which leads to
where can I get the radio evaulated/worked on? Google didn't help
much.

I'm in South Carolina, but I doubt my location is relevant other than
I don't really care to ship it over seas.

Doug