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From: Jon B on 29 Jan 2010 05:37
Jaimie Vandenbergh <jaimie(a)sometimes.sessile.org> wrote:

> On 28 Jan 2010 22:40:41 GMT, zoara <me18(a)privacy.net> wrote:
>
> >Jaimie Vandenbergh <jaimie(a)sometimes.sessile.org> wrote:
> >> On 27 Jan 2010 16:08:10 GMT, zoara <me18(a)privacy.net> wrote:
> >>
> >> >Woody <usenet(a)alienrat.co.uk> wrote:
> >> >>
> >> >> Both of ours are 3GSs. Mine is great, hers less so.
> >> >> Running both together they show a different position!
> >> >
> >> >The more I read about this, the more I'm convinced that some iPhones
> >> >have slightly wonky GPS chips. And I think mine is one of them.
> >> >
> >> >I'll have to check it against Hannah's at some point.
> >>
> >> Also trial it without the phones being in a powered holder - all the
> >> holders I've used mess up the GPS signal to a greater or lesser
> >> extent.
> >
> >Ah. Now *there's* a likely culprit. Mine's always powered, yet most
> >people I've discussed it with have complained about how quickly sat nav
> >drains the battery...
>
> It does, drain in 3-4 hours with a continuous GPS monitoring app like
> tomtom. But for comparison testing of GPS signal reading, you need to
> do like for like, and I suspect the 3G and 3GS have their GPS aerials
> in different places which will be differently affected by the wires in
> a powered holder.
>
> (It's even worse if your powered holder does FM transmission to the
> car stereo)
>
Mines fine with just a basic plastic vent holder, and a power wire
coming up from the cig lighter. It's fairly high too so the phone should
get a view to the sky through the windscreen.

Used mine in a Mondeo with heated screen (not meant to be the best thing
for GPS), and it was only troublesome amongst the high rises in London
centre.
--
Jon B
Above email address IS valid.
<http://www.bramley-computers.co.uk/> Apple Laptop Repairs.
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