[time-nuts] Re: James Miller/Brooks Shera 10 MHz GPSDO

[Mervyn Thomas]

Dan,

As a last resort I would attempt to disassemble the osc.  What concerns 
me is the picture of the osc. shown in the article you gave is not my 
version osc. so I'm pretty sure there would be no tuneable cap inside 
mine??  Will keep the group posted on results.

Merv

On 30/08/2022 8:25 pm, Dan Kemppainen via time-nuts wrote:
> I found this helpful long ago...
> http://www.realhamradio.com/GPS-oven-journey.htm
>
> I think you would only need to go part way in to get to the adjustment 
> screw.
>
> The double oven was used in some equipment spec'd for cold climate 
> operation. It helped speed warmup or some such issue. People have used 
> the outer oven to help stabilize the temperature, although from what I 
> understand that was not the original intention.
>
> Let us know what you find!
>
> Dan
>
>
> On 8/30/2022 3:31 AM, time-nuts-request at lists.febo.com wrote:
>> Unfortunately the HP 10811's I have are in a completely enclosed can 
>> - no holes to poke anything through. To get at any tuning capacitor 
>> would probably entail taking the insides out of the can.
>>
>> The oscillators like mine must have been fairly rare as I am unable 
>> to find anything via Google.  They have 2 main power leads coming out 
>> of the can with 6 pin female connectors to connect to the power Power 
>> Board which is out of an HP Z3801 GPSDO and 2 thin coaxes with SMB 
>> connectors on the end - one marked as 10MHz and the other as EFC.
>>
>> Regards,  Merv
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