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This high performance UHF antenna has a higher gain and a smaller beam angle than conventional Yagi antennas. The reflector grids create an improved front to back ratio with shorter construction while the 91 elements truly make it one of the highest gain UHF antennas available. Although the 91XG is one of the highest gain UHF antennas made, it is also very directional. If you live more than 60 miles from the transmitters, you must get as much elevation on the antenna as possible. Even with its great gain, it cannot pick up signals blocked by the curvature of the earth.