Reason for GPS problems found!

Atilla Filiz atilla.filiz at gmail.com
Tue Jul 15 22:44:07 CEST 2008


A small piece of plastic as a switch for SD, how about that?

On Tue, Jul 15, 2008 at 11:37 PM, Yaroslav Halchenko <site-openmoko.org@
onerussian.com> wrote:

> > The note attached said:
> > "GPS internal antenna issue appears to respond positively to cranking
> > RF_3V to 3.6V from 3.0V."
>
> > Perhaps Torfinn's last Email was right: it may not be an EMC problem but
> > a lack of voltage?
> well... you could look at those results from the other side as well:
>
> it is a SNR issue for sure, and to boost SNR you either
> boost signal (which is what voltage raise does) or you reduce noise
> (which what removal of SD card seems to be doing).
> --
> Yaroslav Halchenko
> Research Assistant, Psychology Department, Rutgers-Newark
> Student  Ph.D. @ CS Dept. NJIT
> Office: (973) 353-5440x263 | FWD: 82823 | Fax: (973) 353-1171
>        101 Warren Str, Smith Hall, Rm 4-105, Newark NJ 07102
> WWW:     http://www.linkedin.com/in/yarik
>
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>



-- 
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Bu mesaj UTF-8 ile kodlanmıştır
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Atilla Filiz
Technische Universiteit Eindhoven
Embedded Systems, Master's Programme
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