Zippo...been in a lot of isolated old areas and sure were targets..
Ever think might not be anything of value in the ground as even in isolated areas bound to get some signals..Appears you have a faulty unit, no goodies in the ground or could also be operator error. Like Steve have to agree have to explain your situation in a more detailed fashion...in the hands of an experienced operator mighty good machine but operator error or just no targets to find all come into play.Personally would have an experienced Explorer user or perhaps a local Minelab dealer try it out to rule out a faulty unit..Gosh I hope your not discriminating out all targets...