The Bolton Technical B2 HD Trucker Antenna is an HDTV antenna for trucks. The B2 antenna receives both local HD and digital TV broadcasts, supporting both VHF and UHF frequencies to provide crystal clear picture and superior sound quality for your TV. Aerodynamic in its design (which resembles a B2 bomber aircraft), the antenna fits snugly onto an existing mounted antenna with its 3/8-24 threaded port. It can be easily mounted onto either a CB radio antenna or a trucker cell phone signal booster antenna. The B2's sleek design and functionality effectively makes any truck antenna look and perform much better than your typical trucker antenna.