[time-nuts] SSR-6t Connector

Tom Van Baak tvb at LeapSecond.com
Fri Dec 21 16:15:15 UTC 2012

Hi Paul,

I'm pretty sure the hp Z3801A and 58503A/B (and perhaps other 1990's era) GPSDO use the Motorola Oncore VP receiver. It was, and still is, a famous GPS timing receiver. Later, many GPSDO evolved to use the Motorola/iLotus M12 receiver.

The new Synergy SST-6T is a clever combination h/w and s/w that turns a uBlox 6T & PIC into a PCB that is both h/w and s/w compatible with an M12. It's a drop-in replacement. But as such, it won't work in a device that is uses an old Motorola UT/GT/VP receiver.

I suggested that they also come up with a board that is VP compatible, but you realize the number of 15-year-old Oncore VP's in the field is probably not that high. It would make an excellent labor-of-love project to create a VP-compatible uBlox 6T board, but it's probably not something you can make a business case for.


----- Original Message ----- 
From: "paul swed" <paulswedb at gmail.com>
To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
Sent: Thursday, December 20, 2012 7:41 AM
Subject: Re: [time-nuts] SSR-6t Connector

> Not to hijack the thread. I purchased a ssr and have not rcvd it yet. But
> my simple interest is to if needed replace the rcvr in my z3801. There have
> been threads on time-nuts that these rcvrs do fail with age.
> My belief is that though the connector on the 3801 may be different and it
> is 5V, essentially connecting the 1 pps TX RX data and power should allow
> this to replace the older rcvr.
> Am I on the right track?
> As a longer term goal and question does this new rcvr actually improve a
> 3801s stability?
> Thanks
> Paul
> On Thu, Dec 20, 2012 at 10:16 AM, David Martin <
> drmartin at ivietechnologies.com> wrote:
>> I had a Motorola M12+ all hooked up with a RF pigtail and data header so I
>> just unplugged the Motorola and plugged in the SSR-6t.
>> The data connector was purchased from digikey several years ago and the
>> details have been lost in the dust.
>> However it looks like
>> http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=A33546-ND
>> I'm unhappy with the one I'm using as the contacts spring pressure is weak
>> against the connector pin -- I will have to consider looking for a more
>> "firm" fitting data connector.
>> The RF pigtail was also obtained years ago from data-alliance.net - their
>> P3B adapter cable.
>> See
>> http://www.data-alliance.net/servlet/-strse-800/MCX-BNC-female-Adapter/Detail
>> - Sent from my iPhone -
>> Please Reply To
>> David Martin
>> drmartin at ivietechnologies.com
>> 801-372-0978
>> Just curious,
>> what connector/pigtail/adapter board did you use to access the 2x5 1.27mm
>> pitch connector on your SSR-6T.
>> Thanks,
>> Dale NV8U

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