This consists of wires embedded in a material which is varies its resistance as a function of temperature. These heaters look like an extension cord and are self-regulating. Temperature control is not as tight as the microprocessor controlled system, but this is not really an issue for this system. A 6' sample of this heat tape was tested in the anechoic chamber. No RFI was detected from 100 to 1000 MHz, using amplifiers and the spectrum analyzers as a backend.
System tests are imminent.
For now this item can be dropped from the IPG's action item list. All the components for the system have been ordered. The system has been evaluated by the Quiet Zone administrator, Wes Sizemore. An ERP of 0.1 W from the reflector site, or 0.2 W from the water tower is allowed. The licensing of the system with the FCC is incomplete.