The "Size D at 12 inches" quirk

[lordmarcovan]

Do you users of the "imaging" machines get this faulty ID reading a lot?

I think it's kind of funny. I always know the machine is confused when it says that (with the TreasureTalk on).

I just recheck, and usually the machine will get it right the second time around.

A local friend of mine also uses the 2500 and says he gets it a lot.

 

[Eu_citzen]

Yes I also get it some times, when it goes into pinpoint is goes into all metal so there might be more trash around/nearby your target or you've been pinpointing badly.
That's for me the most common problem when I get that reading. If pinpoint is good you can ID a coin to 8". I've done it. (measured it and the coins was 15 mm in diameter)
Mostly that reading is trash that's big or similar.(at least for me)

Regards,
Eu

 

[lordmarcovan]

Actually, I think I just got it wrong... it's "Size D at ten inches". That's the one it likes to say a lot.

 

[Eu_citzen]

Well 12" is what i said, if it's at 10" I do mostly dig it no matter what. (but still probably big trash, dig to find out!)

 

[Blockade Runner]

This was the last size "D" at 12 inches that I encountered in March of '07.

 

[bearkat4160]

I get a false size D also....but since I know how it works, while in pinpoint, I move the coil around very slow around the target until ..WHAM.. it locks on the REAL size of the target whick is usually an "A" size target. Which is small....The Imaging gets confused sometimes with the minerals and a small "A" size target. But keep moving the coil around the target in untill you will probally see a small target. Only other thing is its alot of minerals like a blob of mineralized clay. Good luck. Alan (Ga)

 

[Jason in PA]

n/t

 

[Blockade Runner]

n/t

 

[Uncle Willy]

Also with the small receiving coil centering the target exactly is critical with GTI's or you get all kinds of screwy readings. They are very senstitive in this respect. Just jockey the coil around a bit until you get the correct reading and the signal strength indicator reads all the way across the display.

Bill

 

[Uncle Willy]

Nice size 'D'.

Bill

 

[lordmarcovan]

Yeah, I was referring to the false Size D when in pinpoint mode.

I could use some Size D's like the one Blockade Runner posted! Yowza!

I've only found one belt plate, and oddly enough, it wasn't Civil War, though I dug it on a site that produced lots of eagle buttons and .69 caliber Minies.

It was War of 1812, US Light Dragoons. Pewter. Rough shape, slightly bent and pretty flaky and crusty, but whole. That was my most valuable find ever, actually, even in the sorry shape it was in.

I'm sure it would have been Size D, had the GTI "Imaging" machines existed back then (I used the old GTA-500 at the time). The plate was at 12", too.

I probably never would have dug it, had I not just gotten my first pinpointer probe. I dug an 1880s rimfire cartridge at about 6" and might not have rechecked the hole, had I not gotten a probe hit from the bottom of the hole after the cartridge came up. The LD beltplate turned out to be six inches below that. It's weird how the two relics ended up one on top of the other, in the exact same spot, with maybe sixty years and six inches between them.

I've had that happen with modern quarters and a Walker half, once, too.

 

[lordmarcovan]

[quote Uncle Willy]Also with the small receiving coil centering the target exactly is critical with GTI's or you get all kinds of screwy readings. They are very senstitive in this respect. Just jockey the coil around a bit until you get the correct reading and the signal strength indicator reads all the way across the display.

Bill[/quote]

I've learned this, of course.

But sometimes I forget, and don't "jockey the coil around" enough.

It has taken me some getting used to, but despite this quirk and a few other minor ones, I must say I am quite happy with the 2500 now. I graduated from the 500 and 550, and the learning curve was a little steeper than I had expected. I figured since I was a veteran of those other machines, I'd have a cinch of a time with the 2500, but that was only partially true.