Bob Camp wrote:
Hi
For that matter, how hard is it to put it in a vacuum with temperature
control? Gets two big issues out of the way pretty fast. We certainly buy
crystal oscillators that are heated and enclosed in pressure tight
containers (not quite the same as vacuum, but close).
Bob
temperature compensation to ppm accuracy is pretty easy, and has been
done for 100 years or more.
Compensating for air drag changes with temperature might be trickier.
however, the period doesn't change very much with drag.
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