Reflected pulses from a missile are received by each of the four antennas and then supplied by a radio frequency switch to {HEAD ~ a scalar scoring system} which provides {TAIL ~ an analog video signal} to four analog switches 
provides
Reflected pulses from a missile are received by each of the four antennas and then supplied by a radio frequency switch to { HEAD ~ a scalar scoring system } which provides { TAIL ~ an analog video signal } to four analog switches
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH