[Elecraft] Another K2 frequency calibration technique

[Don Wilhelm]

Andy and folks,

Switching between CW and CWR does not guarantee that you are at zero beat -
unless you have carefully set the filters for both CW and CWR first.

Beating WWV against the spot tone will assure that you are right on zero
beat.  If you can't hear the third tone go to zero while listening to both
the SPOT tone and signal, you can use Spectrogram as a visual aid to move
the signal produced by the signal to the audio frequency of the SPOT tone.

BTW - the suggestion to widen the filter so you can hear both sidebands may
get you close, but only close - the human ear cannot hear down to zero
frequency, but you can detect the difference in beat between two tones
rather easily - just tune so the 'wow - wow - wow' beat tone slows down and
becomes inaudible.

73,
Don W3FPR

----- Original Message ----- >
> I didn't bother doing that -- just pressed CW RV (which switches
> between USB and LSB, btw, if you start in one of those and not
> CW: neat!) and estimated the position of the tweaker.
>