Transmitters, once turned on, emit a continuous signal for a period of up to 200 hours. They can be inserted in solid cast, foam or mandrel style pigs. In the event the pig becomes lodged within the pipeline, a receiver can be used to pinpoint its location. An external antenna can be used in conjunction with the receiver to facilitate tracking from a greater distance away from the pipeline. We offer both rental and purchase options. They can be sized to match various pipe diameters.