[time-nuts] Re: Should a double oven XO be thermally isolated or just draft protected?

[Dr. David Kirkby]

On Fri, 1 Jul 2022 at 22:49, Hal Murray <halmurray at sonic.net> wrote:

>
> I think the 5370B has a fan so a shroud to keep the air currents away from
> the
> OCXO seems like a good idea.
>
> Is there a fan in the 5352B?
>
> Yes there is.  But the 5352B runs a lot quieter and cooler than a 5370B,
which would suggest that not as much air is being blown around inside the
frequency counter. There’s not even a heatsink on the back of the frequency
counter

I see your other comment about drafts. It got me thinking that my HP GPS
frequency standard is probably located in about the worst possible place
for drafts - right below the air conditioning unit. I will look at moving
 that.

Dave.
-- 
Dr. David Kirkby,
Kirkby Microwave Ltd,
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