1.Active antenna with build RF amplifier for amplifier for digital TV2 IMPEDANCE:75 Ohm nominal 3 Receiving frequency range: VHF-H 170~230MHZ,UHF 470~860MHZ 4 Supply voltage :DC 5V+/-10% 5 Performance assurance voltage :DC 4.2V~5.5V 6 Current consumption 5V in 30mA(MAX) 7 Operation assurance temp. Range:-20��+60��8 Storage assurance temp.range :-40��+85��9 V.S.W.R<2 10Connector :F plug 11 Gain(AT 5V in):TYP.20dB MIN.15dB 12 Coaxial cable:L=5.0M13.Waterproof Active antenna