:I installed a 2-3 acre section of undergound electronic Radio
: Fence several years ago. On those several acres are several
: Today one of those thousand gophers ate one of those thousand
: wire and I'm getting the fault alarm.
: The radio fence manual is rediculous. It says to start at the
: way point and patch back to the control unit and keep doing it
: the broken section is located. That would take me several years
: several thousand feet of patch cords. Beside that I can't
: the flags (gophers ate those too!)
Well, that's actually pretty standard advice in that manual, and
actually does work well. It's called the "rule of halves".
If you start with 1,000 ft of wire for example and use the rule:
-- you get 500' the break could be in.
-- then 250'
but you'll find the break at about the 8' point because you can
eliminate the parts of the wiring not in the ground easily.
To estimate where the wire is buried, a cheap portable AM radio
will usually suffice. It may not do a lot to locate where the
break is because most wires are transformer driven and the
voltage will exist on both sides of the break, but it can locate
where the wire is buried reasonably well.
If you used the metal flag poles, you might locate the buried
portions of them with a cheap metal detector if you know they're
actually still there and not just mowed/dragged away.
If you have access to a "good" metal detector, it might locate
the actual wire too, depending on how deep it's buried.
Once the wire's located, you could also use the "shorting across
the break" trick to locate the break too, using the rule of
halves and the dog's receiver to tell when it starts working
Short 500' and if Rx works, it's in that 500', else it's in
the other 500'. Then 125' and so on.
An afternoon would surely take care of this for the size field
you have once the wire is located.
The worst case scenario is that there are more than one break in
the wire. Only the rule of halves and looping back to the Tx
would work in that case. Had any heavy equipment or serious
ground movement in there lately?