[maemo-developers] N810 built-in GPS receiver (was: Re: developer program discount code does not work)

[From: Roberto Resoli]

2008/1/11, Torello Querci <tquerci at gmail.com>:
> 2008/1/11, Roberto Resoli <roberto.resoli at gmail.com>:
> > 2008/1/10, Torello Querci <tquerci at gmail.com>:
> > > Hi Kasper,
> > >
> > > 2008/1/10, Kasper Souren <kasper.souren at gmail.com>:
...
> > I'm having same issues as Kasper (chatted with him briely yesterday)
> > and as many others:
> > http://www.internettablettalk.com/forums/showthread.php?t=12727
> >
> > It is wery difficult to obtain a fix the first time in an urban
> > context (with buildings around).
> > I own also a Nokia LD3W  BT receiver, and it seems really more sensitive.
> >
> > One big difference is is that LD3W seems to discover a lot more
> > satellites before obtaining
> > a fix (wich happens in 2-3 minutes maximum). The built-in one seems
> > instead discover only a few satellites (3 or 4 maximum) and once the
> > fix is obtained shows a lot more. (9 or 10)
> >
> > Roberto
> >
>
> When I try to use the GPS receiver I need a lot of time before get the
> position, after the receiver work fine. I got the same behaviour using
> TomTom.

How much is  "a lot of time"? My experience is more than 10 minutes in
bad conditions (street with high buildings around); in the same
situation the external receiver takes 2 or 3 minutes.

> So I suppose that is not e GPS Nokia Receiver problem.

I tested the same n810 withe the two receivers, so my feeling is quite
the opposite.

I have to say, anyway,  that in good conditions (when mounted on a
car, with a good portion of the sky visible) the built-in receeiver
performs well, time to first fix is reasonable, and it seems very
reliable

>
> When I try to switch from map to Maemo Mapper without deactivate the
> GPS receiver so Maemo Mapper spend only few seconds to found the GPS
> module because the posistion is already know.

Yes, this is expected. Even disactivating the GPS and reactivating it
quickly gives a good response.

Bye,
Roberto

>
> Torello.
>