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