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