[Elecraft] KX3 - After temperature compensation procedure - continues to show drift?

[Brian Waterworth]

Hi Mike,

I had to perform the temp compensation a few times.  A couple of those
times necessitated a retry due to operator error in the setup :-)  I
eventually achieved a level of proficiency in preparing to apply the heat
source.  Initially, I used a hair dryer the first couple of times.  But the
drift was still present.  I then used an incandescent light bulb (60W I
believe) in a small articulated desk lamp.  This worked much better as the
temp rise was more consistent over a longer period of time.  After that
successful calibration, I have yet to see any drift or be called out for
having drift by another ham.

The KX3 temp compensation is brilliant for a fanless rig once it is
calibrated correctly.

regards,
Brian
VE3IBW

On Thu, Feb 28, 2019 at 9:07 AM Mike Parkes <mspmail2 at gmail.com> wrote:

> The other day I finally  got up the nerve to perform the temp compensation
> procedure on my KX3. The process went fine as far as I could tell (the
> Elecraft instructions we great), I tried very hard to limit the temp rise
> to only one degree every min or two. So then this morning, I am looking at
> my WSPR mode results on 80 meters. At 2 watts I am still being occasionally
> reported as drifting 1hz drift, mostly negative, (and saw one -2 hz
> drift). I seldom run more than 2 watts any more, and the rig only gets
> barely warm at 2.  So I guess I am trying to understand what is within spec
> as regards these FT8 / wspr types of modes and performing the temp comp
> procedure. Is all well now and these are only anomalies? I will wait until
> I can get some reports on 20 meters wspr, because I know it was showing 2-4
> hertz drift/minute drift on that band at 2 watts, it will be interesting to
> see what it shows now if the band opens some. Is it possible to go back to
> the original temp compensation values?
> Thanks for any thoughts if you have any and 73's from snowy Spokane (we are
> really seeing the snow pile up here it actually looks like winter out there
> :)
> Mike AB7RU
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