[time-nuts] Looking for documentation for GPSTM BY SYMMETRICOM (not Trimble)

[Bob kb8tq]

Hi

Both GPSDO’s were *sold* to Nortel. Neither one was made by them. The two vendors that you 
most commonly see popping up on eBay are Symmetricom ( now Microchip) and Trimble. There
may have been other vendors as well. 

If you are looking for schematics and block diagrams on any surplus GPSDO or OCXO or Telecom
Rb, good luck. Unless a Time Nut has traced out the internals it is very unlikely they exist. Manufacturers
stopped putting that sort of stuff out decades ago for a variety of reasons.

Bob

> On Sep 29, 2019, at 6:54 PM, Taka Kamiya via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> I am looking for any documentation for Nortel branded GPSDO called GPSTM.  What's confusing is there are at least 2 kind with exactly the same name!  I need one made by Symmetricom.  Model number is NTBW50AA-22.  
> 
> Ones made by Trimble are all over the Internet, alone with documentation.  That is NOT what I am looking for.  It has to be Symmetricom.
> If anyone can help me out, I'd be very grateful.
> 
> --------------------------------------- 
> (Mr.) Taka Kamiya
> KB4EMF / ex JF2DKG
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