Jack OA8200 Aerial Mount HD Antenna: * Integrated signal meter to pinpoint broadcast towers prior to scanning for channels * Built-in amplifier enhances weak signals in fringe areas for improved reception * Effortless rotation  easily rotate with 2 fingers * Easy to install  works with varying roof thickness from 1.25" to 6" * No exposed coaxial cables or connections * Full 360 degree rotation  no dead spots due to rotational limit found with other antennas * Dimensions: 12"H x 16"W x 12.5"L