coffelt2 wrote:
At first, I wasn't sure if it was an amplitude or frequency "warble".
Finally decided it was frequency. A little ragged, but affected both receive
and transmit.
Not much, only a few htz, but ragged and disconcerting after so many years
of faithful service................


since I considder myself a a repairman, what do I do next? 30 or 40 years of
"freezemist" and " "heat gun" analysis, I still don't know my way around
this Kenwood TS-130. (my first transciever).

Replace all electrolytics and see what happens next?

Is it warbling at 60 or 120 Hz? If it is, supply rails might be an issue.

But I'd first look at every internal oscillator on a scope and see which one
is unstable. Don't lock the scope to the input, lock it to line and adjust
the sweep by hand until the image on the scope stabilizes. You will see any
phase noise readily (assuming the scope timebase has no visible phase noise).

One of those oscillators is noisy. If they are _all_ noisy than it's time
to look at the supply.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."