Phonics Digital PD-197 Indoor / Outdoor Digital Booster Antenna for Home and Car Use with TVs, Portable DVD Players with TV Tuner and Car TVs (Can be placed on any kind of glass) Type: Active Frequency: VHF/UHF Gain: 30 dB V.S.W.R: &lt; 1.0:1 Impedance: 75 Ohm