in the room, it is very small, and you have all the same provide a small antenna (mine is set to the hard), otherwise the decoder copes perfectly, search 5min channels, resolved quickly! however the remote uses the same frequencies that of my TV. sound button telcommande tv channels corresponds to the change on the remote control of the decoder (so I have to hide the remote sensor of the TV. but not to ban this product because of AC, it will depend of the material of each ...