HR 1680 problem

[Mark Graalman WB8JKR]

 Make sure the two gray wires leading up to the preselector
control are as far apart as possible otherwise the RF
stage will oscillate.

Mark  WB8JKR


On Thu, 20 Feb 2003 18:29:24 EST Woody Hester WD9F <Fghester at AOL.COM>
writes:
> I recently acquired a very nice HR 1680.  Looks wonderful & has been
> well
> taken care of.  It works well with two exceptions.  Just after
> turning it on,
> like about 20 seconds later, there is a screeching noise exactly
> like an
> aerial bomb screech that lasts about 5 seconds then stops.  It sort
> of
> desenses the receiver for a few seconds then things are back to
> normal.  It's
> loudest on 40 meters.  Also, preselector is squirley when turned
> fully
> clockwise and receiver desenses after that for several seconds.  Any
> hints? /
> Thanks!  Woody / WD9F
>
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