[Elecraft] Frequency calibration points

[lenny wintfeld]

Hi

    About a week ago, Ken Brown invited people to try and use CHU as a
frequency reference in checking K2 calibration. I made 2 checks on my
K2  (sn1520): One on CHU at 3330.00 and one on WWV on 10000.00 KHz.

    I did the check in cw mode, matching (by ear) the CHU/WWV carrier
note to the K2's internal sidetone, looking for the slowest beat note I
could. I'd estimate the beat note was 10 Hz or less in both
measurements.

    The results are:
        1. for CHU, my K2 reads 3330.05 (or 50 Hz higher than CHU's
actual transmit frequency)
        2. for WWV, my K2 reads 9999.91 (or 90 Hz lower than WWV's
actual transmit frequency)

    I'm sure not going to sweat these differences. They're plenty close
enough to keep me in band (and in band-segment).

    But I was wondering a) if this is typical of K2's in general;  b) is
a different calibration error to be expected on each band and c) is my
measurement method valid.


                                                                73,

                                                                Lenny
W2BVH