Uploaded, 2008 England Peak district - test run of GlobalSat DG100.
Car has a hardwired (powered from the car stereo 12V - so it comes on when the car is running) GPS data logger based on the DGPS-XM4 Model GPS DataLogger ( http://homepages.tig.com.au/~robk/ ) fed from a Garmin Serial WAAS mouse embedded under the plastic trim of the dash, out of sight.
Another DGPS-XM4 attached to a handheld garmin marine GPS again with WAAS for walking, however enabling serial NMEA output cuts down the GPS battery life to 8 hours (not good for long walks or camping).
Answer, replace the DGPS-XM4 and serial cable with something smaller, lighter with its own batteries. So a test of the GlobalSat DG100. First results look good!