I don't work in the field. A friend who worked in broadcast radio made the comment about a building he worked in, that had a high power FM transmitter in the building. He stated he could follow ANY piece of metal pipe in the building by using a little transistor radio.
I wonder if that effect could be used to trace rebar in a wall by hooking a little 15 W transmitter to the accessible rebar and tracing the metal. Something similar to a pair finder tracer.
Larry
