I bought a bunch of RF indicators, small COB PC boards that would flash a led whenever a cell phone, or any other source of RF radiation was nearby. These are used to indicate acell phone ringing in a noisy situation where you cannot hear the ringer, or the ringer has been silenced. They are actually VERY sensitive, and will light up even when a electric drill starts up a few feet away. Anyone seen schematics for a equivalent type of circuit for such a thing?
Kim..."A Man Of True Frankenstinean Proportions"