The HDA -3700 is a set top design great for digital terrestrial broadcast reception, It features state-of-the-art low noise amplifier technology and circuitry for getting the best reception, Sleek and elegant design that can be set horizontally or verically, , UHF 470-870 MHz, VHF 47-230 MHz, Gain 21 Plus or Minus 3dB, Low noise amplifier technology, High directionality, Dimension - 11, 7 x 6 x 2, 4 In, SKU: MNPR066