Frequency:80-108MHzImpedance:75Ohm NominalV.S.WR:2.0:1MAXReturn Loss:-10dB MAXRadiation:DirectGain(Peak):25-30dBCable Loss:2.5dB/m Max@1575.42MHzPolarization:Right-handed CircularCurrent Consumption:35mAVoltage: 12VWith this adaptor，you will have better radio reception.Package included:A set of Antenna Signal Amplifier Booster