Gilsson High Performance External Remote GPS Antenna with Suction Cup Mount for Magellan Roadmate 300, 500, 700, 760, Meridian Color GPS Receivers 3ft Cable. Smb1f03b180-awmg Amplified (active) GPS antenna to enhance and improve GPS signal reception. Built-in magnets for mounting on car rooftops or other metallic surfaces. Built-in permanent mounting holes for mounting on aircraft fuselage, boat surfaces or car/RV/SUV vehicle surfaces.