Abstract: A system, which selects the most desired signal from similar signals provided by two or more radio receivers, includes a separate arrangement of a signal quality detector, a signal selection gate, and a comparison circuit for each of the similar signals. Each detector provides an output signal level indicative of the quality of the particular one of the similar signals to which it is responsive. The comparison circuits determine from the various detector output signal levels the better signal among the similar signals and provide a control signal to the selection gate in the arrangement including the detector indicating the better signal. The selection gate in the arrangement responsive to the better signal in response to the control signal passes the better signal out of the system. A priority bus is common to all of the above-mentioned arrangements responsive to the respective similar signals.