[Elecraft] kpa100 causing K2 to be low on TX freq?

[kc4kgu@ENTERZONE.NET]

On Wed, 22 May 2002, Don Wilhelm wrote:

> John,
> >From your numbers, it appears that your TX frequency is 1 kHz off - that is
> quite a bit.

That was a typo.  The TX freq was supposed to be 3875.00 and it zero beats
on another receiver at 3874.97.

I re-did it again today and for about 10 minutes, it was dead-on, every
band.  Then it drifted again.  Not as far but, it drifted.  It don't think
it is heat related because the K2 has been on in the shack for the past
couple of days with the exception of moving from the work bench to the
operating position which takes about 20 seconds.  When I did the recal
today and moved it back to the operating position, all buttoned up and
all, it was dead-on.  I wish I could figure out where it was going to
drift.  Once it does the initial drift, it is stable there.  If I could
calculate where it was going to drift, I would correct for it initially
and let it drift ON freq vs OFF freq.

Something else I've noticed is that when using LSB TX, there are two
places that sound somewhat "normal."  The actual TX freq and also about 16
cycles below that.  It is not localized.  A friend of mine in NY was
working with me last night/this morning and he was the one who pointed
this out to me while searching for my "zero beat" on his receiver.

73 de John - KC4KGU
K2/100 #2490