Hi Steve,
I have not noticed anything like this. In fact yesterday I did some
measurements of drift in order to see if the 1 ppm TXCO would be a
worthwhile upgrade. I used spectrogram to measure the drift while tuned
to WWV. From a cold start, until warm up, the Front panel temperature
rose 10 degrees C and resulted in a 9-10 hz drift. The drift seemed to
occur slowly and I did not notice any sudden jump in drift right after
turning the radio on. While I know this is not a test with lab grade
equipment, it may give you a rough idea of what drift I get from a cold
start with the 5ppm TXCO.
73,
John, KD8K
[email protected] wrote:
During the past week I have noticed my K3 drifting during the first 20
seconds after power up. I hadn’t noticed this previously in my three month
old K3 (SN 1672), so I’m wondering if this is normal? With winter here it
is colder in my basement shack (maybe down 55 F), so perhaps that could
explain the drift.
I haven't measured the drift, but definitely have not noticed it in the
past.
Does anyone else observe this drift? Is this normal during warmup?
Steve N9SZ
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