FM signals are used in a preferred embodiment because they effectively pass from {TAIL ~ the wheel area} to {HEAD ~ the radio} 
FM signals are used in a preferred embodiment because they effectively pass from { TAIL ~ the wheel area } to { HEAD ~ the radio }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD