In a railroad track system that provides for communications through a track rail without insulated joints between a specific transmitter and a specific receiver when a plurality of transmitters and a plurality of receivers are communicating using the track rail, a method including emitting a unique signal from the specific transmitter during a specific time. The unique signal is transmitted through a railway rail, which is without an insulated joint between successive rails and is the medium through which the unique signal travels, wherein the unique signal is detectable but not readable by the plurality of receiver. The specific receiver is activated to read the unique signal during the specific time.