Circuit - Plastic Pipe Finder - Circuits designed by David A. Johnson, P.E.


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Circuits designed by David Johnson, P.E.

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Last Updated on: Friday, August 29, 2008 02:35 PM

RF (radio frequency) Transmitter

Plastic Pipe Finder
I used this circuit once to track down the location of a plastic pipe, buried underground. It transmits a weak RF signal, which can be picked up by a portable AM radio from about 6 feet away.

Click on Below to view PDF version of Schematic

PDF Version of Drawing

RF (radio frequency) Transmitter

Master Schematic Category List - David A. Johnson, P.E.