[Elecraft] K3 Frequency Shift

[w0ih]

A couple weeks ago, I was on 40 meters with a group of friends, and one of
the guys (likes everyone on frequency ;-) suggested that I was off.

I finally got around to checking the K3 last week and found that it was off
by about 260 Hz from what it should have been.  I rechecked the calibration
(against WWV, per the manual instructions) and the reference oscillator had
not changed from the original setting (I had it marked down in the manual
from when I first calibrated it).  I had to move it by 260 Hz to get it to
zero beat WWV.

Anyone have any idea why it should shift frequency?   I can't say that I'm
terribly concerned, more curious about it.

Mike

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