> I have noticed this problem and installed a CPU fan to blow
> across the top on the Orion and this keeps the heat build up
> down considerably. I hung the fan under the shelf above the
> Orion attached with velcro strips from Radio Shack. The top
> of the rig stays very cool and the rig does not drift nearly
> as much.
Yes, of course. I have yet to see my II over +- 5 hz using a GPS stabilized
oscillator as a reference, and tracking frequency over about 60 minutes
after turn on. That's with no fans or other stuff. Far better than the
Orion, which whould drift a few hertz more during warmup (but nothing that
anyone would ever notice). My Orion would stabilize at around 15 hz high.
My O-II stabilizes at 1-2 Hz high.
In either case, it's an interesting measurement. But I have yet to have
anyone give me the "you're a little high, OM" comment :-)
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