TV Booster Max Gain: 27dB Max output Level:105dB Input Impedance:75 ohm Band Width: 45-230MHz TV BoosterModel: JYTV307Band width: 45M-230MHzMax output level: 105dBMax Gain: 27dBOutput impedance: 75ohmFeel free to contact us if you need more information. JYTB307 TV Booster