Winegard Sensar IV Replacement HD antenna head, black; Optimized for the DTV spectrum, this Amplified Antenna with the Wingman UHF upgrade integrated into the Sensar head receives maximum VHF/UHF reception, so you can enjoy watching the top rated local program in the best quality HD free; For use while parked; Requires 46.25 inch Weight x 15.25 inch Diameter, unobstructed roof space while stowed