Radioshack Antenna-mounted High-gain Signal Amplifier 15-321upc#040293157319 Amplifies signals from outdoor antenna up to 33dB for HDTV/VHF/UHF and FM receivers Amplifier has 2 outputs so you can easily run it to to 2 different rooms Ideal for distributing HDTV signal to a remote location Switchable FM trap eliminates interference from FM signals Frequency: 54~806MHz