TV tuner or set-top box tuner does not automatically power (5V) voltage, then this antenna is no effect, do not know whether the TV or set-top box power supply, please buy passive antenna.
Category: TV Antenna
Frequency range: 470-860Mhz
Bandwidth-MHz: 390
Gain Gain: 30.0dbi
Voltage standing wave ratio VSWR: ≤2.0
Nominal Impressance Nominal Impedance-Ω: 75
Polarization: vertical vertical
Maximum Power Maximum Power-W: 50
Noise figure NoiseFactor: ≤1.5dbi
Current consumption: DC5V
Current: ≤ 20mA
  Coaxial cable concentric cable: RG174
Cable length-m: 2.5 meters
Weight Weight-g: 130
Connector Type Connector: IEC (TV straight plug)