A set-top box for receiving radio and television signals is disclosed in which there is the presence of at least one unit (2) for receiving a signal (S) and at least one unit (3) for sending the received and processed signal (S′) to an image and/or sound broadcasting apparatus (4) such as a television set, radio set, PC, iPOD, and any other existing and/or achievable apparatus; means for processing the signal (S) converts said signal (S)—into the signal (S′) to be sent through a circuit (5) adapted to allow passage towards the broadcasting apparatus' (4) of information, data, promotions or advertising depending on suitable scheduling of said circuit.