[time-nuts] Star Box

Joseph Gray jgray at zianet.com
Mon Aug 19 12:43:12 EDT 2013


It has the normal Rakon TXCO.

Joe Gray
W5JG



On Mon, Aug 19, 2013 at 12:45 AM, "Björn" <bg at lysator.liu.se> wrote:

> Hi Bob & Joe,
>
> The CMC Allstar was a high quality 12 channel L1 receiver. There was even
> an option for the DGPS version to have an onboard OCXO. Joe, does your
> have that or the ordinary Rakon TCXO?
>
> Shure the Allstar is not a high sensitivity receiver so do not try indoor
> navigation with this receiver. However, measurement quality with a decent
> antenna/antenna siting - it will still give the modern uBlox receivers a
> run. Not to bad for a 10-15 year old product.
>
> It is also nice - as Magnus pointed out - in that it driven by a 10MHz
> oscillator onboard. Compared to a uBlox based GPSDO it does not need the
> 1PPS/phase detector.
>
> These Allstars used for DGPS, were - I suspect - the prime reason for the
> CMC/Novatel branded AT575-90 L1 Choke ring antennas we have seen
> available.
>
> --
>
>     Björn
> > Hi
> >
> > Pretty much everything made from silicon goes through 3-4 year cycles.
> > Anything that's 10 years old is a couple of cycles behind. It's probably
> > not going to work as well as an LEA-6T or even a LEA-5T. It might be
> > competitive with a 4T or a 3T.
> >
> > Bob
> >
> > On Aug 15, 2013, at 10:47 PM, Joseph Gray <jgray at zianet.com> wrote:
> >
> >> I just picked up a Star Box for $10. It has an Allstar DGPS board
> >> inside. I
> >> saw several mentions of similar boards in the archives and I have found
> >> some documentation on the net. Has anyone actually used one of these in
> >> a
> >> GPSDO? Does it work any better than the usual Motorola, Rockwell, or
> >> other
> >> available boards?
> >>
> >> The other thought is, since this is a DGPS board, how difficult would it
> >> be
> >> to use it to obtain a more accurate position fix? Or do I need other GPS
> >> boards to correlate this one with?
> >>
> >> I'll admit that so far, I have only skimmed the documentation that I
> >> downloaded. If I need to RTFM for my answers, just tell me so.
> >>
> >> Some data on what I have:
> >>
> >> Star Box Part No. 100-600304-100
> >> (DGPS Base Station option is checked)
> >>
> >> Inside the box is a carrier board that has a power supply and an RS-232
> >> TX/RX chip. The GPS board that plugs onto the carrier has a label on the
> >> underside that says "VAR 100". This corresponds to the suffix of the
> >> part
> >> number on the box. The top side of the GPS board has the GPS receiver in
> >> a
> >> large metal box that is imbossed "ALLSTAR 12" and "CMC", which is the
> >> manufacturer (since then bought by Novatel?).
> >>
> >>
> >> Joe Gray
> >> W5JG
> >> _______________________________________________
> >> time-nuts mailing list -- time-nuts at febo.com
> >> To unsubscribe, go to
> >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> >> and follow the instructions there.
> >
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at febo.com
> > To unsubscribe, go to
> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
> >
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
>


More information about the time-nuts mailing list