inputs.text: excellent gps device - recent amtrak autotrain ride virgina florida used two gps devices one earthmate bt20 providing gps data street atlas software samsung netbook provided moving map display recorded breadcrumb trail qstarz btq1000x used standalone recorder devices suctioncupped window earthmate completely lost satellite lock significant portions train ride happened often places tall trees close tracks also seehemed happen train changed directions 45 degrees device slow lock satellites newly visible side train lost lock slow regain moving contrast qstarz never lost satellite lock provided complete log entire trip also provided complete log car trip back virginia purchased qstarz couple days trip not aware capabilities trip discovered qstarz compatible street atlas provide movingmap display breadcrumb trail requires qstarz \\nav\\ mode street atlas set \\automatically detect gps\\ earthmate bottom bag backup qstarz sensitive gps device owned including garmin gps iii tom tom go630 sensitive wrap aluminum foil around trying erase current log file sits recording trying erase 20 feet nearest window highly recommend product windows xp sp3