[time-nuts] HP10811 dual oven

[billriches]

Hi Dan,  

I would appreciate it also. Thank you.

73, 

Bill, WA2DVU
Cape May

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces+bill.riches=verizon.net at febo.com] On Behalf Of Alexander Pummer
Sent: Monday, August 03, 2015 8:14 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP10811 dual oven



Hi Dan,
I would be interested on that document too Thank you in advance
73
KJ6UHN
Alex

On 8/3/2015 12:40 PM, Dan Kemppainen wrote:
> Hi,
>
> If you search the internet, you should come across a design by Warren 
> S. It's basically the same type of oven controller that is used in the 
> internal oven for that oscillator.
>
> I did a surface mount version of his design a while back. I've been 
> running it for quite a while now. IMO it is helping to reduce the 
> thermal drift of the oscillator.
>
> Bob has pointed out in the past that the outer oven was not intended 
> to be active all of the time. This is probably true. That said it 
> seems to help in my setup.
>
> If you are unable to find the documentation, please let me know. I can 
> try to dig it up when I get home.
>
> Dan
>
>
>
>
> On 8/3/2015 12:00 PM, time-nuts-request at febo.com wrote:
>>
>> Hi
>>
>> The “external” heater on the Z3801 OCXO is only needed if you are 
>> regularly running below -20C in your environment. Other than the 
>> alarm signal, there is no harm in letting it simply shut off forever.
>>
>> Bob
>>
>>> >On Aug 2, 2015, at 8:56 AM,timeok at timeok.it  wrote:
>>> >
>>> >
>>> >Hi,
>>> >I have seen, but I do not remember where, someone have rebuilt the
>>> external oven controller to complete a stand alone OCXO removed from 
>>> an HPZ3801A.
>>> >Can you hep me to find the document?
>>> >
>>> >Luciano
>>> >timeok
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