DX Antenna UHF Dual Booster for Home Use, High Shielding, Mountable on Horizontal Mast BU433D1 This item was used because the terrestrial digital broadcast signal was weak. This is a used item, so please understand that there may be minor scratches and stains before purchasing. The booster unit itself has sun damage due to outdoor installation. This does not affect its use. Everything in the photos is included. There is no box. Please check the condition in the photos. Please feel free to ask any questions. [Product Description] This single unit provides peace of mind in any reception environment, from strong to weak electric fields. This is a dual UHF booster that amplifies UHF signals, allowing you to switch between 33dB and 43dB gain with a single switch. It is used to strengthen the signal when the TV signal is weak or when it is necessary to send the TV signal to multiple TVs. Its compact size allows it to be mounted on a horizontal mast. Amplification Bandwidth/Gain: UHF 43dB (33dB). JEITA DH710 mark certified. For outdoor use. BU433D1 UHF Booster DX Antenna PSH20 Booster Power Supply