[R-390] A bug and its fixing under way

[Jim Haynes]

I have an R-390A that was making a lot of popping and crackling noise.
Traced it to the inductor in the plate circuit of the 1st IF
amplifier, which seemed to be going open intermittently.  After
messing around and heating the solder lugs a bit it quit going
open and the noise stopped.  But then the receiver was very insensitive.
So it looks like now the inductor is shorted solid.  I've ordered
a few 12 mH chokes so I can replace it and hopefully fix the problem.

While I was working on this I noticed the crystal oscillator output
is low.  Considering how hard it is to get the oscillator out and
work on it, I wonder how important this output level is.



jhhaynes at earthlink dot net