a receiver mixer connected directly to {HEAD ~ an output} of the circulator interface to the transmitter and {TAIL ~ antenna} 
to
a receiver mixer connected directly to { HEAD ~ an output } of the circulator interface to the transmitter and { TAIL ~ antenna }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL