This aerial was made for the new digital uhf transmissions. The whole range utilizes a PCB balun (with captive signal transfer) and has successfully filled the gap between the budget contract aerials and the higher priced high gain aerials. It is easy to install. - Frequency Range CH 21 - 68 (471.25 - 847.25MHz) - Forward Gain 12 dBd - Front To Back Ratio >21 dB - Acceptance Angle 21 degrees