At this point I wouldn't characterize my
experience as a concern. So far as I can tell the
calibration worked well, though I was surprised to
see the tone vs. temp behavior above about 45
deg-C. My impression is that the calibration is
done with a table, so such nonlinear behavior
should not be an issue, so long as it is
repeatable. The post by Bob, WB4SON early today in
this thread described some "crazy" behavior which
would concern me.
Of more concern in such modes might be the power
limitation at higher temps. There is some
temperature at which the PA power will be limited.
I don't know if that limit is of concern for JT65
operation or not. I know there have been
discussions in the Yahoo KX3 group about different
ways to add cooling to the KX3 for portable ops --
including fans, larger heat sinks with fins, and
in one case leaning a cold cooler against the rig.
73, Phil w7ox
On 3/18/14, 11:39 AM, Jack wrote:
I have been following this thread with interest.
Given our change in living arrangements, from a
house with plenty of space for antennas to an
apartment with no place for antennas, we are
forced to do mobile and portable operation. In
that case we can no longer easily operate our
K3/P3 and have been considering getting a KX3
instead. This thread causes me to wonder if this
would be a good idea since one of the things we
would want to do, while operating portable, are
various digital modes, including JT65.
Is this VFO temperature compensation problem
serious enough to make reconsidering the KX3 wise?
Thanks,
Jack, W6NF/VE4SNA
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