[Elecraft] Calibration with CHU via Spectrogram Software

[k6se@juno.com]

Hi, Jim,

I'm a nit-picker when it comes to VFO accuracy also, but it's an
impossibility with the K2 with the present design of it's oscillator
circuits.  If you use CHU or WWV to calbrate the dial, you'll find that
it's only accurate when the temperature is exactly the same as when you
did the calibration.

I went 'round and 'round with Elecraft on this issue, and the best they
could offer was that "at some future date we might redesign the
oscillators to alleviate the temperature drift problem".

As I said before, adjust the 4 MHz oscillator on the control board to
4000.0000 kHz and accept whatever small frequency error the VFO has.

73, de Earl, K6SE