[ale] [OT] I need a tone generator for subterranean wire tracing

[Richard Bronosky]

I have a sprinkler system with one zone that doesn't work. I have
opened up the (old analog gear system) timer to locate which wire is
giving me the problem. Unfortunately I see it go out my basement wall
and into the ground and have no idea were it goes to. I'm wondering if
a simple tone generator like this will work http://j.mp/iF6Bup I
strongly doubt it. I bet I need something like this http://j.mp/jiB1qY
and I bet I can't even afford to rent it for a day. Also, I don't know
where to look for one to rent.

My next idea was to make one. I found instructions for using an RF
Choke to find a break in an in visible fence. However, that is taking
advantage of the RF transmitter in the invisible fence base. I don't
know how to produce and detect a signal. And, because it is
subterranean, it needs to be pretty well amplified.

Please advise!

-- 
.!# RichardBronosky #!.