[time-nuts] motorola oncore descriptions

[James R. Gorr]

Wow, thanks!  You answered all my questions, and very
quickly.  -- Jamie

--- Jason Rabel <jason at extremeoverclocking.com> wrote:

> Hi Jamie,
> 
> The VP is the top of the line model. I bought one of
> the VP models from
> midnight_seller on eBay, it is running the latest
> firmware (10), has an
> onboard battery, right angle MCX, and has all the
> features enabled (IBC),
> position hold, 1PPS and all that jazz. I asked Randy
> @ Synergy what that
> code meant and he said the following:
> 
> The options go like this:
> 	I: TRAIM
> 	B: Basic "plain vanilla receiver"
> 	C: Carrier phase
> 
> The UT+ is the timing model, it uses a subset of the
> VP commands. It also
> only works in the Motorola Binary format, it can not
> switch to NMEA mode. It
> also has TRAIM and position hold. Besides the 1PPS
> output, it can also do a
> 100PPS output. I bought a couple of these from
> sales3600 on eBay, they do
> NOT have a battery, have a straight MCX connector,
> and they were running
> firmware 3.1, which the latest is 3.2, I again asked
> Randy @ Synergy what
> the difference was and he said 3.2 had a fix for
> 100PPS. He would update a
> receiver for $25 each, but since I'm not using
> 100PPS I have no real reason
> to upgrade it since it works fine as-is.
> 
> The GT models are more for navigation, not timing.
> They do not have position
> hold or TRAIM. They do have 1PPS but it is not as
> accurate as the VP or UT+
> models.
> 
> For the prices on eBay I would get the VP receiver,
> unless you specifically
> want/need the 100PPS, which you would still have to
> update the firmware.
> 
> Once you start considering costs for everything else
> you will need, i.e.
> adapter for power & RS232 signals, antenna, etc...
> You could just also spend
> a little more and get a M12M Timing (newer model)
> Starter Kit from Synergy
> Systems.
> 
> Now, about the Rockwell Jupiter 8 boards...
> 
> The TU30D140 is 5V powered (Antenna can be passive,
> 5V or 12V)
> The TU30D160 is 3.3V powered (Antenna can be
> passive, 5V or 12V)
> 
> Both boards have 10 KHz output. That's about it...
> 
> Any of the above units will work with NTP, in their
> native binary modes. I
> know with the Jupiter 8 if you switch it to nmea
> mode then the time will be
> 1-2 seconds behind always in the nmea sentences.
> I've experienced the same
> issue with an old sirf receiver, and a superstar II.
> I haven't tried my
> motorola in nmea mode so I don't know what it would
> do. As far as support
> goes, the motorola has the most options in NTP.
> 
> I'm listing a couple jupiter boards on eBay, and I
> would be willing to sell
> them direct for less than what I'm listing them.
> 
> If you dig around in the time-nuts archives, you can
> a discussion on these
> boards within the past couple months I believe.
> 
> I have loads of PDFs for all the above Motorola &
> Rockwell stuff. Too much
> to email but I can throw it online and you can
> download whatever you need or
> want.
> 
> If you want a frequency reference, someone has been
> selling Brandywine GPS-4
> units on eBay for $355, I don't know how many he has
> left or when the next
> batch will be listed. You can go to their website
> for more info, but it's a
> GPS unit with an OCXO and everything.
> 
> Jason
> 
> > Hello all
> > 
> > I am looking for information on the different
> > Motorola Oncore GPS's.  Would like to know what
> the
> > difference is between the UT+ and VP, and the
> > differences between the different model numbers. 
> > Advantages of one over the other?  Stuff like
> that. 
> > The links from TAPRs page to Motorola is no longer
> > valid.  Can anyone point me to a good source of
> basic
> > information like that?  Maybe someone had an
> e-version
> > of the specs for these?  Looking at different ones
> on
> > ebay and not sure which one to get for building a
> > frequency reference like the one by Brooks Shera. 
> 
> > 
> > Also, I found some Rockwell Jupiter's, models
> TU30D140
> > and TU30D160.  What is the difference between
> them?  I
> > believe the TU30D140 has the 10KHz output.  Is
> that
> > true?
> > 
> > Thanks in advance! --Jamie
> 
> 
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