[R-390] Fwd: R-390A Antenna Trimmer Repair

[Larry H]

Al has graciously put this document out on the R390 disk for our viewing
pleasure.  Here's a link to the Tutorials section that has the link to
it:   http://r-390a.net/faq-refs.htm#Tutorials  or here's a direct link to
it:
http://r-390a.net/R390A%20Antenna%20Trimmer%20Cap%20Repair.pdf

Regards, Larry

---------- Forwarded message ---------
From: Larry H <larry41gm at gmail.com>
Date: Sun, Jun 16, 2019 at 5:15 AM
Subject: R-390A Antenna Trimmer Repair
To: R-390 Forum <r-390 at mailman.qth.net>

Well, I was hoping to never have to work on the antenna trim variable
capacitor, but here it is, staring me down, daring me to open this can of
worms. It has the 'rotor' grounded, which is not good for the AGC, and some
static when rotating it to tune for best signal. I thought I'd look around
the Pearls and the Y2KR3 tech manual for some help, but found only a little
bit there.  So, I thought I'd document what I found on my journey.  It's
attached for your reading pleasure.

Let me know what you think.

Regards, Larry