I've been using my BT-335 in data log mode. When I download the file and display it on Google Earth or Routebuddy, the file comes out as many short segments instead of one long track. If you take a close look at the track, you'll see that it looses sat lock for a short period of time, creating a small gap in the track file. For instance, today I recorded a trip of 4 hours duration. This yielded 23 track segments. So, is there something not set properly or is there something wrong with my logger? The unit was attached to the roof of the vehicle and had clear view of the sky at all times.