Radio receiver providing reduced intermodulation distortion

Claim 1

A radio receiver for receiving a radio signal on a given channel, the radio signal having an audio signal with a coded information signal, comprising: a plurality of stages; a demodulator for recovering the audio signal; a filter for recovering the coded information signal from the audio signal; a decoder means for decoding the coded information signal; means for determining if the decoder means was successful or unsuccessful in decoding the coded information signal; means for selectively adjusting, over a continuous range of the received radio signal on the given channel, predetermined operating parameters of at least one of the plurality of stages as a function of the received signal strength of the received signal to reduce intermodulation distortion; wherein the predetermined operating parameters of at least one of the plurality of stages is adjusted if the signal strength of the received signal has reached a predetermined level and the decoder means was unsuccessful in decoding the coded information signal; wherein the decoder means re-decodes the coded information signal after the at least one of the plurality of stages is adjusted; and wherein the predetermined operating parameters of the at least one of the plurality of stages remains adjusted if the decoder means was successful in re-decoding the coded information signal, indicating that intermodulation distortion had occurred; and the predetermined operating parameters of the at least one of the plurality of stages is re-adjusted back to its pre-adjusted settings if the decoder was unsuccessful in re-decoding the coded information signal, indicating that intermodulation distortion had not occurred.