Abstract: A system for the distribution of radio-frequency signals includes a main unit associated with a first radio communication set, a remote unit associated with a second radio communication set installed in a preset area, for radio coverage of the area, and a communication channel associated with the main and remote units, wherein the main unit and remote units have analogue modulation elements of signals to be sent on the communication channel. The remote unit includes a selective amplification unit associated with the second radio communication set and having analogue/digital conversion elements of signals coming from the main unit, through the communication channel, and/or of signals coming from the second radio communication set, digital filtering elements of digital signals coming out of the analogue/digital conversion elements and amplification elements of signals coming from the main unit, through the communication channel, and/or of signals coming from the second radio communication set.