ACE 250 owners might want to read this.

[Ricardo_NY1]

Perhaps some of the ACE 250 users here might have stumbled onto this trait of the detector, or perhaps not. For those that haven't, I highly suggest you try it for yourself, and I am still to put the experiment to practice in the field. After some extensive testing of this detector in the past few days since I got it, I ran into this, and I will call it the "Coins enter and leave silently, caps do not". The biggest issue I noticed so far with my 250 is that it tends to pick up certain bottle caps as targets/coins. Well, after messing, testing, messing with different caps, coins, etc, I finally realized one thing.....when sweeping a coin over the coil back and forth while simultaneously but slowly increasing its distance from the coil, the "Boings" will sound and then they will stop. The discovery here is that caps do not act the same. Doing the same thing with the bottle cap, just at or edging away from the distance the cap will no longer be picked up by the coil, the last "Boing" will be a scratchy/interrupted/broken "Boing" The same holds true the other way around. Holding a cap a nice distance from the coil, begin sweeping it over the coil while slowly bringing it closer to the coil. At the edge where it begins to be detected, there will be a scratchy/interrupted/broken "Boing" and then the clean "Boings" begin. A coin almost never seems to do that. What does this mean? This means that perhaps the next time I go out there, I might be able to tell if the target is likely to be a bottle cap by sweeping the target while slowly lifting the coil and waiting to see if I hear the target exit with that broken "Boing", or if the "Boings" are all clean throughout, and of course, do the opposite.....hold the coil high, sweep, and slowly bring the coil into depth range to see if the "Boing" begins clearly or not. Has anyone ran into this? I'm going to try this out on the field ASAP..........maybe someone can beat me to it. I will report back on this.

 

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[ramjet2187]

Good news, and thanks for the tip. Santa's little digger will be taught this lesson on or about the 25th...............I hope Santa can keep it in the box that long .

Roger

 

[Sandman]

This is what we mean by learning your detector. All act differently even in different locals.

 

[Dick from IA]

A great report, Ricardo & yes I agree with what you've written.

One other thing I've noticed is caps will tend to give erratic, jumpy depth indications; coins read more consistently.

DFIU

 

[bruceuth]

i got one two and heard the boing i had it on jewelry and at a park i thought i read a nickel but it was foil. this the first time out with it. i love the pinpointing easier then my bounty hunters that how i got that foil i was right on it.

 

[dahut]

Like the Sandman said, each detector responds differently. Garrett detectors, and one assumes others, are designed to cleanly pick up US coins. Trash targets invariably have their own reactions. You iwll almost always be able to raise your coil higher (get it farther away) than you can with coins, while still keeping a response. AND, as youve noticed ,trash often gives tapering, harsh edged responses out near the edge of detection for that particular bit of junk.

If you recall, I said a few days past that instead of wishing the caps would be gone, learn their response as the detector sees them. Sounds like you did that. Good job.
You wont be able to elininate them entirely, but knowing your detectors response suite is a valuable way to help cut down on the trash.

Now go wade through them and see how your test results fare in the real world..

 

[young one]

wait so does this mean when you "move the coil away form the target" does this mean you raise it off the ground...or move it away like up,down, or side to side?

 

[dahut]

wait so does this mean when you "move the coil away form the target" does this mean you raise it off the ground...or move it away like up,down, or side to side?
Yes.





































Seriously - when you begin raising your coil (moving it away fron the target), thats when the response changes will occur. It also applies to a lesser degree to edge response, ie, off to one side, but that's not what Ricardo means.

 

[Danimal]

Easier way to tell (but using the same exact data from the ACE)
When in pinpoint, over a target that you think might be a coin, release and re-depress pinpoint. This "detunes" you pinpoint down to a very small point. Now, while in pinpoint, drag the signal quickly away from the target. A cap or pulltab will drop off sharply. A coin will drop off smoothly. Hard to describe, but the trash almost sounds like the sound is turned off immediately like a switch is thrown. A good target sounds like the tone drops off more subtly. I swear I can tell the difference!

 

[Ricardo_NY1]

Thanks for the tip Danimal..........I will definately try this out.......I've experienced this behavior in the limited times that I have used the PP'er. I dig all my targets off of what I get on X'ing......but engage the PP'er here and there just to compare and see how accurate it is. I couldn't X with the 250 if my life counted on it at first......I've gotten the hang of it though.........man and machine are one!

 

[lonewolfe]

When in "doubt" = "dig"!