said radio freuency transceiver system being adapted to transmit radio frequency energy to {HEAD ~ said ported coaxial cable} and to receive {TAIL ~ radio frequency signals} from said ported coaxial cable indicative of intruder detection 
said radio freuency transceiver system being adapted to transmit radio frequency energy to { HEAD ~ said ported coaxial cable } and to receive { TAIL ~ radio frequency signals } from said ported coaxial cable indicative of intruder detection
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