[Elecraft] K2 frequency calibration

[Vic K2VCO]

Lowell wrote:
> Adjusting C22 to clalibrate the K2 frequency had absolutely no effect
> when using WWV or a frequency counter as reference.  I replaced C22,
> no change.  Continuity between C22 and U6 checks ok.  I suspicion a
> problem with U6.  Any comments?

C22 only has an effect when you run CAL PLL. See the procedure at 
<http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf> for 
the best way to calibrate the reference oscillator.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco