accuracy gps-chip?

Peter Kraker peter.kraker at
Wed May 7 20:19:09 CEST 2008

GPS in in freerunner is made by u-blox, antaris 4 I beleive. A bit less 
sensitive than Sirf III or u-blox LEA-5H (which is excellent) but still 
a very good GPS receiver. I think you won't need a data logger with 
Freerunner in your pocket.

As for GPS receiver over bluetooth, it's perfectly doable without much 
programming work involved I would think. It won't be supported 
out-of-the box though.

Best regards
Peter Kraker

Jens Meyer pravi:
> Hello all (especially the GPS-specialists)!
> Actually I am considering to buy an external GPS-mouse (bluetooth + 
> datalogger) for geotagging, tracking and navigation purposes 
> (standalone and with actual handy-software).
> Of course I am waiting for the Freerunner, too and the question 
> occured if there is really a need for such an external device when 
> using the Freerunner.
> I am hoping for a reliable battery-life of the Freerunner so - as far 
> as I can see - another important point is the quality/accuracy of the 
> GPS.
> Are there any major differences between the ATR0635 (used in 
> Freerunner, correct?) and an Adopt MTK chipset (based on 
> test-information similar to a SIRF III - i.e. used in 
> I compared some chipset-specifications but don't understand the 
> important information in detail...
> I found further information how to use the GPS-information from 
> Neo/Freerunner via Bluetooth on a laptop. Will it be possible to use 
> the Freerunner as external GPS-device via bluetooth with a Nokia N73 
> also (perhaps with following the description under "Bluetooth GPS 
> relay"?)? No flames, please - only in case of emergency. ;-)
> Any hints would be great, thanks!
>           Jens
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