The RF signal {HEAD ~ R118} is amplified by {TAIL ~ the power amplifier} 118 and transmitted by the antenna 120 
is amplified by
The RF signal { HEAD ~ R118 } is amplified by { TAIL ~ the power amplifier } 118 and transmitted by the antenna 120
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH