> Typically I've used these to follow a specific pair of
> wires in a bunch,
> but not one wire through a wall. I'm not sure how well that will work.
> Also, I've only seen them used on twisted pair wires and not coax. Coax
> may not work since it should leak very little of the signal out. If I
> remember I'll try mine out on some RG-6 tonight and report.
I have used them on coax (we call them 'toners' around here), but you have
to isolate at least one end, and run the tone down the normally grounded
shield. Even on phone wire, they have a very limited range, you have to get
the speaker probe within just an inch or two of the wire. The one I had was
not usable through walls.
Here's a couple of links, just the first ones I found
http://www.starkelectronic.com/lbtgtt.htm
http://www.progressive.textron.com/download/archive/at8l_en.pdf
Randall
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