At 5/23/2006 05:20 PM, you wrote:

>   I have found the Motorola 85 degree C gold oven to be quite
>  stable - the earlier black 65 degree C oven wasn't.

Stability wasn't an issue in this case.  I was using a temperature 
controller with feedback; the sensor on the crystal was held within +/- 0.2 
degrees F.

Turns out that with that level of crystal temperature stability, the 
primary drifting component in a G.E. MVP is the oscillator transistor.

Bob NO6B






 
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