First time out with the 250

[GimmieThe Loot]

The snow in Chicago is finally gone and I took my 3 day old 250 into the front yard. I found some pocket change, as well as the sprinkler pipes! The pipe was coming up as different metals each time I passed over it. Does anyone know why?

 

[John-Edmonton]

The pipe was was reading all over the place because if its large size and probably because you have the sensitivity turned up too high. Good luck with your next hunt.

 

[cc8137]

Also a good lesson........a good target is always repeatable

 

[dahut]

The snow in Chicago is finally gone and I took my 3 day old 250 into the front yard. I found some pocket change, as well as the sprinkler pipes! The pipe was coming up as different metals each time I passed over it. Does anyone know why?

Both of these pretty much nailed it - the detector was reacting a large signal overload.

The ACE sensitivity, at preset, is often just too high. Normally, when you get erratic signals that ID as many things, as you describe it,
turning the sensitivity down a few notches will help.

However, with large targets - especially those that are wholly or partly made of iron - you can expect the reaction you got. As our friend from West "By God" Virginia puts it, a good target is repeatable.**

** This is subjective, of course. A pull tab is not considered by many to be a "good" target, but it will be repeatable and signals cleanly almost every time. This is because to the detector it IS a good target: highly conductive and concise.