Frequency range Gain Powering method RF output cable VHF 47 ~ 240 MHz UHF 470 ~ 870 MHz VHF: 21 +/- 3 dB UHF: 17 +/- 3 dB Adapter: 12V, 250mA Digital TV Receiver: 5V, 40mA F to F connector ( or IEC to F)