[time-nuts] eBay Ublox

Azelio Boriani azelio.boriani at screen.it
Tue Jan 3 18:25:01 UTC 2012


Oh no, I was speaking always of timing version GPSes. For non timing
version GPSes you loose the position-hold timing mode too. uBlox has T-RAIM
in the LEA6-T version. In the block diagram of uBlox GPSes they show the
option XTAL/TCXO for their receivers. Although not stated, I believe that
the TCXO option is reserved for the timing version hardware.

On Tue, Jan 3, 2012 at 6:16 PM, Bob Camp <lists at rtty.us> wrote:

> Hi
>
> I believe that more than just TRAIM goes away when you get the "not a T"
> version of the uBlox receivers. You probably should check the jitter on the
> 1 pps output ...
>
> Bob
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Azelio Boriani
> Sent: Tuesday, January 03, 2012 5:13 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] eBay Ublox
>
> Yes, no TRAIM on the uBlox but I haven't seen the TRAIM alarm kicking in on
> the Motorola/iLotus M12M so I think that for our experiments the uBlox is
> fine. Even better, have the two: the Motorola/iLotus and the uBlox.
>
> On Tue, Jan 3, 2012 at 2:37 AM, k4cle at aol.com <k4cle at aol.com> wrote:
>
> >
> > The problem with the U-Blox receiver is that it does not have TRAIM as
> > does the Motorola UT+ and some others that are made specifically for
> timing
> > applications.  Just be aware of that when trying to decide on which
> > receiver to use.  73's Doug, K4CLE
> > Connected by DROID on Verizon Wireless
> >
> > -----Original message-----
> > From: Azelio Boriani <azelio.boriani at screen.it>
> > To: Discussion of precise time and frequency measurement <
> > time-nuts at febo.com>
> > Sent: Mon, Jan 2, 2012 09:42:54 GMT+00:00
> > Subject: Re: [time-nuts] eBay Ublox
> >
> > I have experience with the LEA5-T in timing mode and, and of course, it
> > works as expected. You can set not only how many samples to take but also
> > the variance to achieve before starting the position-hold/timing mode.
> >
> > On Sun, Jan 1, 2012 at 10:44 PM, Bob Camp <lists at rtty.us> wrote:
> >
> >  Hi
> >>
> >> I haven't used that particular unit. I have played with similar units.
> >> That's pretty old stuff, and does not appear to have timing software in
> >>
> > it.
> >
> >> I suspect you would do *much* better (both performance and price wise)
> >>
> > with
> >
> >> something newer.
> >>
> >> Bob
> >>
> >>
> >> On Dec 31, 2011, at 7:41 PM, <lstoskopf at cox.net> <lstoskopf at cox.net>
> >> wrote:
> >>
> >> > UBLOX TIM-CJ module TIM-ST GPS engine Jupiter footprint
> >> >
> >> > anyone have any experience with this for timing application?
> >> >
> >> > N0UU
> >> >
> >> > _______________________________________________
> >> > 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.
> >
> > _______________________________________________
> > 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_lists.febo.com mailing list