[time-nuts] Double oven ocxo's was Tbolt reception problems

[Magnus Danielson]

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