Used to amplify the FM / UHF antenna TV signal: very useful, especially if the problem of not receiving TV channels, the signal is too weak. This amplifier has a UHF bandwidth adapted to the new UHF standard (470-694MHz). Allows reception of DTT channels and minimizes potential interference associated with 5G. The design is designed to improve the efficiency of the filter to be connected to the antenna. Gain setting for perfect optimisation of reception quality. If the problem occurred is caused by another element of the system (decoder, cable, antenna placement, connections, etc.) this product will not solve the situation.