[time-nuts] KS-24361 REF-0 standalone

paul swed paulswedb at gmail.com
Fri Aug 7 14:06:28 EDT 2015


Looking forward to the notes.
Yes it could be fairly simple if what ref 0 wants is a string that
essentially says the system is fixed with 3 d accuracy. Perhaps after that
the ref 0 makes no checks other then the string keeps coming with the
correct quality. Not to push a particular proc but any of the low end ones
will do that stunt very easily.
That would be pretty sweet.
Paul
WB8TSL

On Fri, Aug 7, 2015 at 10:13 AM, Bob Camp <kb8tq at n1k.org> wrote:

> Hi
>
> Ok, I will write something up and post it here. It will probably take a
> few days
> to get it all into a form that answers most of the questions.
>
> What you will need:
>
> 1) A working REF-0
> 2) A PIC or other micro to get things going
> 3) A GPS with a PPS output (any will do)
> 4) Code specific to your GPS and the needs of the REF-0
>
> Since the Oncore needs to be set up each time it’s booted, there is no real
> advantage to using one. You still need an MCU in the mix.
>
> More to follow.
>
> Bob
>
> > On Aug 7, 2015, at 5:24 AM, Graham <planophore at aei.ca> wrote:
> >
> > Bob,
> >
> > I would like that information too please and thank you.
> >
> > I have a pair that is working quite well and I also have a second REF-0
> that I want to start testing but just haven't got round to it yet to figure
> out what is needed.
> >
> > cheers, Graham ve3gtc
> >
> >
> > On 2015-08-07 02:39, Bob Camp wrote:
> >> Hi
> >>
> >> You need to get the Oncore running with the correct position locked in
> and spitting out the right strings.
> >> That’s all done by the CPU in the REF-1 unit. The REF-0 simply grabs
> the data off of the string
> >> as it comes by.
> >>
> >> I’ll see if I can dig out the information and send it to you off list.
> It’s buried around here somewhere.
> >>
> >> Bob
> >>
> >>> On Aug 6, 2015, at 10:02 PM, Edesio Costa e Silva <
> time-nuts at tardis.net.br> wrote:
> >>>
> >>> Thanks.
> >>>
> >>> I have some Motorola Oncore available.
> >>>
> >>> Can you detail this "fairly simple manipulation of the signal lines"?
> >>>
> >>> Regards,
> >>>
> >>> Edésio
> >>>
> >>> On Thu, Aug 06, 2015 at 09:57:20PM -0400, Bob Camp wrote:
> >>>> Hi
> >>>>
> >>>> People got a bit ???excited??? about the level of KS box discussions.
> All of the work decoding
> >>>> the 15 pin connector and how to drive the REF-0 was taken off list.
> >>>>
> >>>> Simple answer:
> >>>>
> >>>> Yes you can run a REF-0 by it???s self. It needs a dummy string that
> looks like the output
> >>>> of a Motorola Oncore to feed it and some fairly simple manipulation
> of the signal lines.
> >>>> It will then quite happily discipline to the pps you feed it.
> >>>>
> >>>> Bob
> >>>>
> >>>>> On Aug 6, 2015, at 7:27 PM, Edesio Costa e Silva <
> time-nuts at tardis.net.br> wrote:
> >>>>>
> >>>>> Hello Fellows!
> >>>>>
> >>>>> Had anyone managed to run the KS-24361 REF-0, the one without GPS,
> as a
> >>>>> standalone unit? If so, can you provide some links on how to
> configure it?
> >>>>>
> >>>>> The reason to try this is cost. The REF-0 unit costs USD 25 + USD
> 52.30
> >>>>> (shipping to Brazil) and I have to pay the same amount as custom
> taxes.
> >>>>>
> >>>>> Right now the REF-0/REF-1 pair would be too expensive.
> >>>>>
> >>>>> Regards,
> >>>>>
> >>>>> Edésio
> >>>>> _______________________________________________
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