[Elecraft] Another K2 frequency calibration technique

[Rick Dettinger]

With my old Drake R4C I could center the passband tuning on the carrier =
frequency and find zero beat very accurately, but not by ear.  The R4C =
had a real S meter and as zero beat was approched, the needle would =
vibrate at the audio frequency right down to zero  beat.  This was done =
on AM to set the crystal calibrator to WWV on 10Mhz.           73  Rick  =
K7MW=20


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