[R-390] Reduced 500-1000KHz sensitivity

[bavarianradio at comcast.net]

I would be tempted to look for a broken or loose shaft clamp on the slug rack for that frequency band. I believe it's the second one from the right if it's a 390 and not a 390A.  Ross W1EKG
----- "Jim Temple" <jetemp at insightbb.com> wrote:

One thing that is universal about the Fair "massacre" radios is that
they
sat in the elements for months, if not years. I bought 2 of them and
upon
refurbishing, found many inexplicable faults that was taking a long time
to
correct.
Finally, my solution was to redo each and every mechanical ground. That
included the ground under can and tube socket tabs. You need to actually
lift the tabs and clean between the frame and component.
That did the trick, and the rest was a lot more straightforward.
Jim Temple