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Old 07-22-2008, 02:19 PM
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tichi
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Re: GPS - how to remove satellites from phone's memory?

Thank you for the info, ckl_88!

> My AGPS settings are basically the same except my GPSMode is at 4.

afaik, it not only tries tro GET the ephemeris data, but also to send them to server, and to fine-tune?
which should make no dofference if the server is not replying anyway...


> 1. If I get a fix of about 4 sats, if I turn the GPS unit off (ie. quit all gps > apps and put the phone to sleep), after about an hour or two, the time
> to fix is the same as my cold fix times (1-1.5 minutes).

an hour is enough to lose a satellite.. makes sense? (their period is
about 12 hours?)

> 2. I've been using the latest sprint radio (3.42.xx) for a few weeks now. > Ever since then, when I go into Google Maps and select Use GPS, the
> blue dot puts me in the middle of nowhere. When I say nowhere, I mean > a map doesn't even display.

coordinates 0.0 0.0 ... Atlantic ocean somewhere near Africa?

> Then yesterday, I downgraded to the Alltel radio (3.37.10) and tried
> google maps again. Upon selecting the Use GPS, 10 seconds later, it put > me about 4 km from my actual position. Just tried it now and it put me
> about 1 km from actual position here at work. So my phone, with this
> radio, is finding my general location. That said, time to fix is still about
> 1-1.5 minutes.

might it be a coincidence? what's the relation between Google Maps and Radio? otherwise from your description it seems that AGPS works with this radio (though you just said it should not work with Bell phones)?

> 3. In QPST,

btw, do not you know where to get this QPST?


> Personally, I think the GPS units on Bell phones are falling back to
> Autonomous mode because the AGPS and PDE servers (from other
> providers) are not providing the correct information (if at all).

so far it is compatible with my obsrervations...

> I think that if we can figure out the Bell PDE and AGPS servers then we
> can expect some pretty quick cold fix times.

would be very cool!

Last edited by tichi; 07-22-2008 at 02:27 PM.