[Elecraft] K3 drift

[John A. McCabe]

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

Steven.Zabarnick at notes.udayton.edu 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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