Originally Posted by shrag

I have a new 8130 with gps and have installed both bbtracker and GPSed to give them a try. Both seemed to work very well, until I went up to the Sierras to do a little hiking. Both programs are reporting my elevation several thousand feet in the negative. Interestingly, it seems to be almost exactly inverse. For example, when I know I'm at about 4,000 feet, it shows -4,000 feet. Since this happens in both apps consistently, I'm assuming it's something to do with the location api or the GPS itself. It's essentially just an annoyance, but it does cause problems with things like viewing the track in Google Earth, which attempts to fly at the elevation of the track and ends up crashing into its own terrain model.
Has anyone else noticed this?
Is it potentially a problem with the actual hardware?
Does anyone know of software that will strip elevation data from a .gpx or .kml file, or potentially reset it according to a terrain model?

Thanks all!