Those radios are notorious for having the electrolytic capacitors go bad.
You might want to check them out. Any with bulging tops should definitely
be replaced. Same if they're leaking electrolyte onto the pc board. Others
with no definite sign of problems could be bad, too.
73, Zack W9SZ
On Mon, Nov 4, 2024 at 10:59 AM David Tanks via VHFcontesting <
vhfcontesting@contesting.com> wrote:
> I have a friend that has this radio from the 80's-90's era. It works fine
> on 2 meter SSB and FM; on 6 meter SSB and FM it has developed what sounds
> like a high-pitched tone when the radio is keyed. The Tone switch is off,
> and has been quickly turned on and off to clear up any dust/dirt that might
> have gotten in there, with no improvement shown. Has anyone else run into
> this problem, and how did you fix it? Thanks in advance!
>
> David AD4TJ
>
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