joerg at openmoko.org
Sun Jul 13 19:21:01 CEST 2008
Antenna is pointing front longaxis.
You have to hold device upright (lanyard hole to ground, AUX-key to sky)!
Am Sa 12. Juli 2008 schrieb Jonathan Spooner:
> I've been playing with my GPS and finally got a fix using agps diag
> tool. I stood the gta02 up on my garden table using a pop bottle :-) I
> think bottom line the gta02 has a poor antenna.... in fact the first
> time I got a fix I did so at the point I rested my free stylus on top of
> the gta02!
> Once I had a fix I used the signal strength screen in the agps diag tool
> and its then plain to see the signal is precarious at best with an
> average strength of around 28 which is greatly affected by orientation
> and nearby objects from hands, stylus, people etc pretty much what you'd
> expect in a device thats receiving a very weak signal.... except we know
> the say system is working so that only leaves the gta02 internal antenna
> as the problem.
> Russell Sears wrote:
> > I played with it a bit more and think i figured out why i wasn't getting
> > locks quickly. It looks like my Freerunner's GPS is working after all! :)
> > I've updated the wiki GPS_Problems page with some basic information
> > about how GPS devices obtain initial locks, and added more
> > troubleshooting information... It would have saved me a few hours;
> > hopefully someone else will find it useful. Someone familiar with GPS
> > should probably check it for errors. Most of what I wrote is based on
> > things I learned today by word-of-mouth and skimming wikipedia articles.
> > -Rusty
> > Russell Sears wrote:
> >> This might help too (I should add myself to it...):
> >> http://wiki.openmoko.org/wiki/GPS_Problems
> >> I've only gotten a fix using the agps diagnostic tool gui. I did it in
> >> the middle of a clear night with nothing near by, by going to the signal
> >> strength screen, and slowly rotating the phone until the bars started
> >> turning from light blue to dark blue, and going with an orientation that
> >> seemed to work, kind of like with an old analog TV set...
> >> I don't know if doing it actually helped, but while playing this game, I
> >> got a fix in ~ 2-3 minutes, vs the tens of minutes I'd waited before
> >> Bumble, after 10-15 minutes of waiting, do you see any satellites in the
> >> "ss" tab of the agps diagnostic tool? Does it display a time in UTC
> >> after a few minutes? If so, we're probably in the same boat.
> >> Is there a document explaining the exact handshaking procedure the
> >> chipset in the freerunner uses to lock onto the satellites?
> >> -Rusty
> >> andres wrote:
> >>> On Fri, 2008-07-11 at 23:57 +0200, Bumbl wrote:
> >>>> Be happy
> >>>> I have never got a fix up to now although trying on different locations
> >>>> for >45min each.
> >>>> I'll consider to use my waranty.
> >>> probably this is related
> >>> http://wiki.openmoko.org/wiki/FreeRunner_GPS_antenna_repair_SOP
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