1,very easy to use 2,Gain:VHF 26Db ,UHF 28dB 3,Impedance:75ohm 4,Frequency range:47-850Mhz 5, ... Features: ModelMumberFrequencyRangeReceivingRange GainOutImpedanceNiosefigure PowersupplyTurningDegreeDY-7 47-850 MHZUHF/ VHFVHF: 26dB,UHF: 28 dB 75Ω ∠6.5 dB AC110V/230VDC12V VHF:360UHF ... : 49*32*284.N.W: 9kgs5.G.W: 10kgs telescopic rod antenna