hi, I have two gps instruments made locally (identical) and also a garmin 72. The new instruments are very accurate and reliable nearly everywhere. They are not much affected by clouds, trees and even track from within trains with double glazed windows. But there is one problem. In Coimbatore between latitudes 11.0 and 11.1, these instruments go haywire. On josm I see a string of tracks in the north- south direction, one straight line about 50 kilometers long. As soon as the boundary is crossed, there is no problem. I have not yet measured how far east and west this extends. The fact that it is precisely 0.1 degree where the interference is suggests something man made. This does not affect my garmin 72. One suggestion is that the instrument is picking up some other signals from other satellites. Has anyone experienced anything like this?
coordinates for the trip: 1. moving south, track goes haywire at 11.1 N 76.9372 E and reappears at 11.0 N and 76.9628 E. Again moving north it breaks at 11.0 N and 76.7732 E. -- regards Kenneth Gonsalves Associate, NRC-FOSS [EMAIL PROTECTED] http://nrcfosshelpline.in/code/ _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk