A transmitting unit is coupled to the receiving unit and transmits {TAIL ~ the data} to {HEAD ~ an antenna} 
A transmitting unit is coupled to the receiving unit and transmits { TAIL ~ the data } to { HEAD ~ an antenna }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD