Steve,
It is normal that squeezing the bottom panel will cause a BFO shift due
to the proximity of the BFO inductor to the panel. One normally does
not squeeze th epanel during operation, so it is not usually a problem.
The BFO may also shift during the time the KPA100 is being put into place.
Now if reasonable pressure down on the mounted KPA100 causes a BFO
shift, you either have something loose or the enclosure is being
deformed in some manner - that behavior is not normal.
73,
Don W3FPR
Steve Kallal wrote:
I was trying to calibrate the frequency on my K2/100 and noticed that
the received beat frequency changed when attaching the top cover (the
KPA100 option). After putting the mounting screws back in, I noticed
the frequency will again change when squeezing the top and bottom
covers towards each other with my fingers. The change is about 50 to
100 Hz or so.
Is this normal? Somewhat I don't think so, but hadn't paid attention
before. I've been monitoring WWV on 10 MHz in CW mode beating against
the spot tone. There is constant carrier to beat against, and I that's
how I noticed the beat frequency changed.
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