[Elecraft] N6KR's 4 MHz oscillator cal method for the K2

[Unifiedtx@aol.com]

I have 2.03d firmware.  After approximately 6 hours of warmup I carefully 
adjusted C22 at WWV at 10 MHz for equal tones between USB and LSB and matched 
14913.51 and 4913.51 as precisely as I could get it in CAL FCTR.  The 4913.51 
would flicker between 50 and 51.  I put the counter probe on TP1 (VCO) and 
switched to 40 meters and ran CAL PLL.  I then put the probe on TP2 (BFO) and ran 
CAL FIL for each operating mode (including CW REV).  My VFO resulted in being 20 
Hz high on 15 MHz.  After putting the KPA100 lid back on the K2 it ended up 
being 10 Hz high.  It will be interesting to see if this accuracy after warmup 
will hold in days to come.  This calibration method seems to be easier and 
more accurate than the other methods.  Thanks Wayne.   Roy Morris  W4WFB 


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