... of a complete GPS tracking center based on a PC, no need monthly fee 1. GENERAL INTRODUCTION: ... complete GPS tracking center based on user's PC, no need monthly subsciption fee. The software ... ET700/ET3500/MC300, etc trackers, and transmit to PC mapping software EX300. The software uses the RS232 ... Google map, MS MapPoint, Google Earth, Google Earth Plus, Trackmaker, etc. It allows the real time tracking ...