Uncle Willy.......

[Spanky]

Something I was meaning to ask you.

With the 550 I'm beginning to notice a strange performance.

To locate a coin I use the pin point and locate the position as usual and move the coil towards me to centre the location on the top of the inner ring as usual.Never had a problem and works great.....but....I'm starting to notice that on occasion the pin point will stay audibal a foot past the actual location (where I think the coin is) and will not turn off as usual indicating I just passed the coin centre.Sometimes its because it may be a long threaded rod which to me is normal but now I notice it on coins. When it happens I drop the sensitivity to 5 and turn 90 degrees and sometimes the situation disappears and I dig the coin.Sometimes it makes no difference....thats when I eye ball where I think the coin is and dig and come up empty handed.

 

[Uncle Willy]

The hotspot applies to shallow coins 1-3 inches. As the target gets deeper the hotspot moves back slightly ( because the signal is bending backwards ) towards center and the signal gets longer as you drag the coil back. Watch your depth and if it shows four inches then the target will be an inch or so straight behind the hotspot and each additional inch in depth will move the center of the target back another inch.

If you don't want to fool with this then do the 90 degree procedure and you'll pretty well nail it. Hope I answered you correctly. If not thump me again.

Bill

 

[FrankG]

Spanky,

On occasion, I've also noticed the exact behavior you describe with my 250. I've never been able figure out what is taking place. It doesn't happen very often and I've thought that perhaps it was a mineralization or ground ballance fluke.

I fully understand the situation Uncle Willy described above but I "think" what we are occasionally experiencing is different.

 

[jimmileo]

I'm not Uncle Willy, but I have noticed that same situatioin on my ACE250 & I have been using the ACE about as long as anyone. It seems to me as if the coil somehow drags the signal with it. I usually approach the spot from a different angle and it will stop doing it. I don't know what causes it, but it only happens about a couple of times on each outing. Monty

 

[Uncle Willy]

Have any of you tried detuning these signals? Sometimes there are multiple targets present and one just blends into the other.

Bill

 

[Spanky]

seems to make no difference. I made it out tonight and actually had the coil drag back 2 feet with a solid signal than fade out (not a sudden stop). I then swung the coil at the spot to see if there was anything there and it showed nothing. I than switched from coin mode to all metal mode and still had no signal.I than went 2 feet back where I started from and tried it again only to have it repeat the situation. I tried eye balling where I thought the coin was by swinging the coil side to side than forward and back. No coin......nothing. I was hunting in sand and was set at a depth of 6. I moved to a totally new area (few miles away)that was black top soil and had no more issues. I'll keep trying different things and see if I can work it out.It makes sense what you said that maybe there are multiple signals and its streching out or pulling me from the initial target. I'm going to try dropping down to a lower setting next time ...say at 3" and see if it makes a difference.It may occur at a certain depth with multiple targets ....I need to figure out how to handle it or maybe the initial target is deep and as I drag back I pick up a shallow target that pulls me from the original. I'd like to believe it is something like that. I do have a good eye at eye balling by swinging the coil as to where the coin is and I'm surprised when I dig down that I don't find anything.Stumped for now.

 

[jeff@middlesex]

Are you pushing the pinpoint button when your on top of the signal or do you take the coil away push the button and then bring it back into the field of detection?

 

[Uncle Willy]

It can also be a large hunk of junk, a pipe way down, or a patch of rust. Have you tried probing to see what it might be? It could also be a band of mineralization and if you're in sand it could be a patch of black sand.

Bill