[R-390] warbling BFO problem solved

[Joe Foley]

One more thing to do while you're in that area, Bob.

Loosen the bushing on the KC CHANGE shaft where that
shaft goes through the front panel, there are three
bushings on that shaft, it isn't easy to get all three
to line up perfectly, two wouldn't be so hard.  Also,
that shaft may have some bend in it, so what we
usually do is to leave the one on the front panel
"just snug".

Joe




--- Bob Young <youngbob53 at msn.com> wrote:

> Don said:
> 2. Now for the warbling of the beat note. There is a
> small strap that is 
> mounted at the base of the VFO shaft and rides on
> this shaft. The end has a 
> vee notch where it rides on the shaft. Carefully
> clean this area so as to 
> restore it's grounding ability. While you are there
> apply just a drop of oil 
> where the VFO shaft enters the front of the housing.
> Hopefully these two hints will improve your
> situation.
> 73
> Don WC4G
> ** the BFO centering procedure is on Chuck Rippels
> web site www.r390a.com
> there is also a lot of information at
> http://www.r-390a.net/Pearls/ 
> concerning VFO/BFO
> 
> 
> 
> I tried this and it worked like a charm, the BFO
> note is now clear, louder 
> and best of all smooth into and out of zero beat, no
> more jumping around. It 
> did sound like a bad connection which is why I tried
> this first. I'm now 
> waiting for a whole set of Bristol wrenches so I can
> loosen the little clamp 
> behind the face of the radio to center the BFO and
> I'll be all set,
> thank you all for your help.
> 
> Bob Young
> Millbury, Ma
> 
> 
>
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