Racing Radios has a new product that will increase the range of your in-car radio where you are using a composite roof without a ground plane for the antenna.
Racing Radios ¼ wave monopole antenna with included flexible wire ground plane. Easily installs in seconds with included Dual Lock adhesive mounts. Let us know in the notes of the order which radio model you will be using, as these antennas are built to order. Features: + Easy Installation + Flexible Ground Wire Plane + Dual Lock Adhesive Mounts