probably one of these extensions is able to help?
- Advanced Location Sensor Extension by Niclas Gins
- Location Service Util Extension by Andres Daniel (10 USD)
- LocationSensor Extension. Accuracy. Geocoder. GeomagneticField by Juan Antonio
- NMEA Extension to get location/NMEA data ($GNGGA and $GPGGA) by Juan Antonio
links taken from the extensions directory
Taifun