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Original thread:
Post 10 made on Saturday November 16, 2019 at 14:46
Don Heany
Senior Member
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September 2008
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On November 15, 2019 at 12:37, Ernie Gilman said...
Don Heany would like this, and we all should know about it.

Toner instruction is usually to connect the two wires from the tone generator to a wire pair. This results in a usually very clean tone signal that you can pick up at the other end of a hundred foot long wire (or any place along the way). But the nature of wire pairs is that their construction tends to cancel them out.

So a MUCH stronger signal can be put on the wire by grounding one output of the tone generator -- either output, red or black -- and connecting the other one to one of the wire conductor. I've traced wires in an attic from the room below over a distance of sixty feet using this method, where I was waving the wand above my head and the wires put out a signal great enough to be picked up by the wand.

If the wire is in a conduit, or the wire conductor you choose is grounded, this method is pretty much useless.

Discovered this many years ago attempting to tone out a coax run. Connected to center conductor and shield, just as I had given up hope one of the leads popped off and the hound started barking like crazy. Total eureka moment.


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