[Elecraft] Another K2 frequency calibration technique

[Wallace, Andy]

> -----Original Message-----
> From: Ron D'Eau Claire [mailto:rondec@easystreet.com]
> 
> You don't try to find a zero Hz audio beat. The point is to 
> "zero beat" the SPOT tone  - the sidetone - at whatever frequency you 
> have it set for in CW mode, just like you'd tune in any CW signal. Then
you 
> aren't dealing with the fact that the K2 can't real low audio frequencies.


Ah, right you are. I TOLD you my coffee hadn't kicked in... ;-)

Well my technique was to zero beat the VFO with the voice announcement 
of WWV so the (computer) voice sounded normal, then adjusted
the trimcap during a quiet period of WWV. My brother has my 
oscilloscope otherwise I could have used that on the audio line
to see if the <10 Hz wave could be seen and not heard. hi

Regardless -- your point about the small error at 20 MHz being
VERY small at 4 MHz is the best part about the technique, whichever
one you use at this frequency.

Andy