Run a metal snake into the conduit then get a metal detector and sweep
the area for the conduit. If this doesn't work there are wire tracing
detectors that might do the job. You hook the transmitter to the snake
and sweep with the detector.
If all fails you might try a metal probe. Stick the probe into the
ground and feel for the conduit. Or dig up a couple of feet of
conduit. Note the direction it is going then move in that direction
and dig a small trench where you thing the conduit is.
One of these methods should work.
If all fails install new conduit.

Dave WD9BDZ


Dave, your idea above, plus some comments from others has made me
realize that this is the way I should proceed, for my first attempt. I
do have a Service Monitor. I'll simply run my snake into the empty pvc
conduit until it hits the end ( duct tape ) and connect an RF signal to
it, then using a small HT, track the signal down to the end.

My thanks to all for other ideas presented here, too.


Ed K7AAT