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Posted by Pop` on May 2, 2007, 2:00 pm
Andy Asberry wrote:
> wrote:
>
>> A friend has an invisible fence for her dog. The wire was apparently
>> severed by someone turning over soil in a rather large area adjacent
>> to her property.
>> She claims to have used a portable radio to find the break in this
>> system before, but she can't remember whether she was using the AM
>> or the FM band. In any event, this time she has tried a different
>> radio (the other one is broken) with no success.
>> My question is: Can one use a radio to find a break like this? And
>> if so, how is it done? If not, is there an inexpensive device that
>> could be used to do it? (She doesn't want to spring for a metal
>> detector.)
>> I really don't need more info, but would like to know a little more
>> about how invisible fences work. I would assume the wire simply
>> acts like a transmitting antenna.
>> Your help is, as always, much appreciated.
>> Thank you.
>> Frank
>
> She could use what she already has; the dog collar. Strap it on her
> arm and take a stroll around the yard.
>
> --Andy Asberry--
> ------Texas-----
No, that's almost guaranteed not to work. It would only work if the break
point was within a few inches of a node of the wavefront being propogated
down the wire. BTDT.
Pop`
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