For better reception in vehicle interiors, this remote antenna is the answer. It has a built-in, magnetic mount for the outside of your vehicle, and comes with more than 9 feet (3 meters) of cable and MCX connector.
Compatible Devices:
Aera 500, 510, 550, 560, 660, 760, 796,
GDL 39, 39 D, 51, 52