a first switching device coupled to the analysis circuit, the equalizer and the radio receiver, {HEAD ~ the first switching device} selecting the equalizer in response to the analysis circuit in the event {TAIL ~ the preselected characteristic} exceeds the preselected threshold, and deselecting the equalizer in the event the preselected characteristic does not exceed the preselected threshold 
a first switching device coupled to the analysis circuit , the equalizer and the radio receiver , { HEAD ~ the first switching device } selecting the equalizer in response to the analysis circuit in the event { TAIL ~ the preselected characteristic } exceeds the preselected threshold , and deselecting the equalizer in the event the preselected characteristic does not exceed the preselected threshold
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH