[time-nuts] RFX GPSDO - Anybody played with one of these?

Bob Camp lists at rtty.us
Tue Oct 2 12:29:25 EDT 2012


The rated temperature stability of the OCXO is not "super good". You will
see more frequency shift on it than say the TBolt OCXO, far more than a

That's not at all saying it's a bad part. For Time Nut duty, I would try to
keep it in a fairly benign ambient situation. 


-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Jim Lux
Sent: Tuesday, October 02, 2012 9:04 AM
To: time-nuts at febo.com
Subject: Re: [time-nuts] RFX GPSDO - Anybody played with one of these?

On 10/2/12 5:08 AM, Azelio Boriani wrote:
> Yes, I agree.
> On Tue, Oct 2, 2012 at 1:29 PM, Bob Camp <lists at rtty.us> wrote:
>> Hi
>> The OCXO probably isn't going to do very well with the outdoor
>> swings.
>> Bob

Why not.. granted it's easier with large mass and large insulation, but 
ultimately, it's all about the closed loop gain of the temperature 
control loop.  With small mass, the time lag effects will be small, at 

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