Please understand that the U.S. government cannot correct mapping errors in consumer devices and apps. The government’s GPS satellites are simply beacons, like .A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo spatial positioning. It allows small electronic receivers to .Gps repairs and sales for magellan, garmin, furuno gps. Repair and replacement of GPS and marine electronics. GPS DOCTOR, maracom marine.How to Install a GPS Navigation System for Your Automobile. The GPS antenna may be installed in the vehicle, for instance on the meter or on the cloth rack it also .