[R-390] Z503 Replacement

[bavarianradio at comcast.net]

Well, The AGC seems fine!! My problem with the limiter is still there, but I'm getting closer to resolving it. I found the mounting stud for T 506 was broken allowing a ground lug to make intermittent connection. I replaced it with a piece of 4/40 threaded rod. It's much better but I have audio distortion when the limiter is shut off. If I turn the limiter on but don't advance the pot, it sounds fine... Before I started, the audio cut off completely with the limiter off. This is progress!! I'm going to shotgun replace the mica cap  connected to the lug, it looks like the wax has melted a bit.  73's Ross W1EKG
----- "rbethman" <rbethman at comcast.net> wrote:

I would expect ALL coils on the IF decks to be very different between
the R-390/URR and the R-390A/URR.
Let us know how this works out over time!
Bob - N0DGN