Replace your old Sensar antenna with the JACK replacement head for better digital TV reception. Includes custom bracket for simple retrofit to your current antenna mast using the existing mounting pins. Broader reception rang helps to receive signals found in the “dead spot” or 35 degree of rotation not reached by the existing mount. The amplified antenna can be powered by your existing antenna power supply or used with the included power injector. A universal mounting bracket is also included for installation on a pole or railing for residential use. At just 22.5” H x 16” W x 12.5” D the JACK replacement head is 70% smaller with improved wind resistance and weighs 25” less than the existing antenna head. For use with Sensar Antennas only.