[Elecraft] K3- To zero beat or not to zero beat

[Dennis Mennerich]

I do the same but use CW mode and reverse-CW. Easier to see difference and more precise adjustments. Dennis K4THE

-----Original Message-----
A better method is to tune the receiver to the carrier frequency of the highest WWV frequency you can hear. Then put the receiver in SSB mode and look at the line out audio with a soundcard-based spectrum analyzer such as Spectrum Lab (https://www.qsl.net/dl4yhf/spectra1.html). Check to see if the 500 Hz and 600 Hz tones are correct. If not, adjust the REF CAL to make them right. Be sure to check on both USB and LSB; you 
may have to split the (usually very small) difference between the two 
sideband responses. Randy, W8FN