Ace 250/Pull Tabs

[tucky_tector]

Anyone have any ideas why when I notch out foil, tabs, out the ace still picks them up. I can notch all the way to penny and it still finds tabs.
Bud

 

[Uncle Willy]

Do you notch them out or punch the elimination button? Notching these out will cost you nickels and a lot of rings.

Bill

 

[tucky_tector]

I usually dig everything. But just experimenting I notched everything up to penny the ace would still pick up certain pulltabs. Just wondering why. Haven't had the ace too long and trying to learn it. More used to the older units. I have an old Whites 5900 di pro and Garrett ADS II / with Bloodhound two box that I normally use. Bought the Ace to try the newer technology. Think I like the older units better. I can fine tune them to suit my pref's. Just wondering if something is wrong with the Ace or maybe something I'm doing wrong.
Bud

 

[Uncle Willy]

As I asked before, did you try knocking them out with the elimination button?

Bill

 

[FrankG]

Bud,

Bills question is key....perhaps you missed the point.... there is a difference between "notching buy segment" and "notching a specifically identified target". Although you use the elim button to apply the notch, the segments could be very different.

This is verbose but from what you've told us, I don't know a simple answer.

If you find a specific target (pull-tab) and you immediately notch it out with the "eliminate" button, it will eliminate "the specific notch" which ID that target. This may or may not be where the 250 says pull-tabs should be.

If you notch it out by simply eliminating what the 250 says is the segment for "pull tabs", you definitely won't eliminate them completely.

Just as the detector is not 100% accurate in ID-ing correct coin values 100% of the time, neither can it ID "pull-tabs" 100% of the time. Target conductivity is just not that repeatable in the real world.

In the same way dimes and quarters sometimes show up a notch out of position sometimes, so do pull tabs of various conductivities.

I've often dug dimes that ID as quarters (and vice-versa)
I've often dug nickels that identified as foil or tabs
I've often dug pennies that ID as dimes (and vice-versa)

Other operator considerations .... when you notch out segments on the ACE it still finds "everything" and indicates "everything" on the ID scale. However, the ACE will NOT output an audio tone for those segments/ranges that are notched out.

Also, you could be getting fooled by a brief audio tone for a moment if the target is "jumping around" and occasionally hits a segment that is not notched out. So one scenario is the you hear a brief beep, pinpoint the target and dig a pull-tab.

Also, when you pinpoint, the ACE runs in "all metal" mode and does not honor the notches so it's quite possible you have multiple targets and got the pull-tab.

I hate to be so vague but you really have to give a lot more detail as to how you notched and how you actually found the tabs you thought you had eliminated.

Hope I didn't just confuse the situation.

 

[jackintexas]

The 250 has only 12 notches as to the normal GTA which has 24. Each of the notches is very wide. I own two 250's. There are tabs very close to the nickel and some below nickel.On my XLT nickels most often come in at 20-21. In my area some tabs come in at 22. On the 250 because it has wider notches it tends to pick up tabs in the tab range. Same for zinc pennies. It too tends to pick up tabs below zinc penny. But all in all I like my 250's. I call them my coin vacumn machines.

 

[tucky_tector]

Thanks FrankG,
Your info was real helpful, Guess the problem is a case of wishful thinking. If I try to completely elimate pulltabs I would probably have to notch out about everything, therefore losing a lot of good finds. Guess I,ll keep diggin tabs. At least I'm helping clean up the enviroment. That should be worth something.
Thanks
Bud

 

[tucky_tector]

Willy,
No I was notching them out before I started detectin. Not as I would hit them. But I might try that and see what happens.
Thanks
Bud

 

[Uncle Willy]

That might solve most of your problem if the tabs are fairly consistently the same.

Bill