INDOOR TV ANTENNA Power supply : 9 V ,500mA Frequency range: 30-950 MHZ Impedance:75ohm Gain: 23dB Output level: 65 dB μ V Reception Tips Digital TV reception can often be improved just by changing the location of your current antenna, even as little as a few inches. For example, moving it away from other objects or placing it higher or lower can often improve reception. Be sure to move the antenna slowly as digital TV tuners need a little time to properly detect the signal. You need to rescan for available signals if you are missing channels.