[time-nuts] EFC info on Trimble 34310-T OXCO

Ed Palmer ed_palmer at sasktel.net
Fri Aug 22 18:19:45 EDT 2014

Have you checked your X72 to see if it has the 1 PPS discipline option?  
That would be a lot easier (and probably better) than your proposed 


On 8/22/2014 12:39 PM, Dave M wrote:
> Does anyone have any info on the OXCO in the Nortel/Trimble NTBW50AA-17
> GPSTM receiver?  The OXCO is labeled as Trimble 34310-T.  I see some Trimble
> 34310-T oscillators on Ebay with pinouts labeled, but no other info.
> Specifically, I'd like to know the EFC characteristics for it.  I'm thinking
> of the possibility of pulling the OXCO out of the GPSTM and subbing in a 10
> MHz Rubidium, and using the GPSTM to discipline the Rubidium.  My Rubidium
> is a Symmetricom X72, recently purchased.  It seems to be working well.
> Does anyone know the differences between the three OXCOs used in the GPSTM
> receivers ("T", "T2" and "Oak")?
> Thanks for some insight,
> Dave M

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