[AMRadio] R-390

[Rick]

Thanks to all. I was able to locate and repair the problems. Fortunately,
they were easily solved and the R-390/URR is once again working beautifully.
The problems with the Current Level meter were no more than a dirty zeroing
potentiometer. The signal level of the calibration oscillator along with the
Antenna Trim problem were solved with a couple of new tubes and alignment.

By the way, it is the original R-390/URR not the R-390A.

What is the best lubricant to use on the gears?

Thanks... Rick/K5IAR

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Rob Atkinson
Sent: Tuesday, May 10, 2011 5:35 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] R-390

the fast way to spot the 390 is the antenna trim knob on it is over on
the right of the front panel.

on the 390A it is up at the top in the middle.

Rob
K5UJ