[time-nuts] More from the obsolete gps file: oncore nmea

normn3ykf at stny.rr.com normn3ykf at stny.rr.com
Sun May 30 23:18:38 UTC 2010


Ralph,
Just chatted with a fellow at Lockheed's project Blue Horizon. He said that all of the Garmin hockey pucks (rx+ant) they tested do work above 60kft.
The biggest issue is firmware ver. As I found out to my dismay. Not all have the same features. 
Thanks for the input,
Norm n3ykf
---- Ralph Smith <ralph at ralphsmith.org> wrote: 
> The Vienna (Virginia) Wireless Society has had several balloon launches. Our last, on May 1, 2010 reached 117,877 ft. We use a Garmin GPS-18, which works at these altitudes. Information on our flights can be found at <http://www.viennawireless.org/balloon/missions/>, and some pictures from the latest flight are at <http://www.wherry.com/photos/2010-05-01-balloon-vws8/>.
> 
> Ralph
> 
> On May 30, 2010, at 6:14 PM, <normn3ykf at stny.rr.com> wrote:
> 
> > Björn,
> > There are some gps units that work above 60k ft. Some do not. It's a question of trial and error.
> > http://showcase.netins.net/web/wallio/GPSrcvrsvs60kft.htm
> > Do understand about and versus or, though.
> > 
> > Thanks,
> > Norm 
> > ---- bg at lysator.liu.se wrote: 
> >> The export restricion is really speed & alt above limit. Low speed and
> >> high altitude should be no problem. However many vendors have chosen OR
> >> instead of AND.
> >> 
> >>   http://www.armscontrol.org/documents/mtcr  item 11
> >> 
> >> --
> >> 
> >>   Björn
> >> 
> >> 
> >>> Mike,
> >>> We're launching a weather balloon. Using APRS to track it. The balloon
> >>> will easily reach altitudes in excess of 65535 ft. The tracker only
> >>> accepts nmea input.
> >>> 
> >>> Most gps units won't work over that number, for obvious reasons. Why
> >>> bother to code beyond that number as few people will need it as well as
> >>> the export restriction on altitude and speed.
> >>> 
> >>> Sounds crazy, but then again, it's time nuts..
> >>> 
> >>> Norm McSweyn
> >>> 
> >>> ---- mike cook <mike.cook at orange.fr> wrote:
> >>>> I see "high" is a relative term.
> >>>> 
> >>>> em-406a seems to be spec'd for 18000 meters. where are you going?
> >>>> 
> >>>> 
> >>>> Le 30/05/2010 22:35, normn3ykf at stny.rr.com a écrit :
> >>>>> Hi all!!
> >>>>> Not all oncores are created the same. I THINK (based on inference)that
> >>>> some of the GT+ receivers don't support nmea. Bad luck on my part to
> >>>> get those. BTW: M12+t's don't support nmea, either.
> >>>>> 
> >>>>> I queried the gps id from the board, and noted when I tried to send
> >>>> @@ci from tac32 that it said supported in ver2 and greater.. Mine is
> >>>> ver1.
> >>>>> 
> >>>>> Just my luck.
> >>>>> 
> >>>>> Anyone got a nmea capable (proven) that they'd like to sell. Must be
> >>>> capable of high altitude flight.
> >>>>> 
> >>>>> Thanks.
> >>>>> Norm n3yfk
> >>>>> 
> >>>>> _______________________________________________
> >>>>> 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 mailing list