Rick Karlquist wrote:
John Green wrote:
As to the double oven OCXO, I have 2 I purchased off eBay in the last few
months. One is a Morion MV89 and the other a UCT 8663. I compared both to
the Z3801 over several days and was not impressed. They seemed no better
than a good single oven unit. Of course, I wasn't trying them over a large
temperature excursion but I expected them to be better than a single oven.
We demonstrated thermal gains of over 1 million in the E1938A
single oven oscillator. You don't need a double oven.
While the E1938A has very good specs, there arn't that many floating
around the second hand market and to the best of my knowledge no one
manufacturing them (please tell me otherwise!). I also think that the
E1938A performance and design-details may not be known or at least used
by that much people outside this group and the obvious HP/Agilent staff.
Cheers,
Magnus
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