The MIPRO AT70 is an UHF antenna that stabilizes signal receiving and prevents impedance interference from nearby objects because of its vertical 1/4 wave antenna which is surround by horizontal antennas at a 45° degree, causing a 1/2 wave dipole antenna effect. The AT70 antenna is able to reduce interference by filtering signals outside the range. It has 50 Ω impedance for matching with regular 50 Ω impedance antenna cables. The MIPRO AT70 has a higher positive gain than a 1/4 wave single rod antenna and smoother impedance within 620~960 MHz band. Therefore, the length of the antenna does not need to be adjusted while receiving. The MIPRO AT70 UHF ground plane antenna is suggested to be installed at the central location of a hall, on the wall, inverted on a ceiling, or mounted on a tripod (MS-30).