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