Big silver air test surprise

[JJ]

I'm not sure if my ctx is reading different than others, but I decided to run some air tests in all stock modes and all of my custom patterns, basically testing just about every setting and mode possibility. I was a little shocked to find that in virtually every mode, 90% silver dollars and .999 silver eagles fell LOWER in the conductive scale than even wheat pennies. The silver eagle consistently hits lower than a copper cent. I know its just air testing, but i couldn't imagine those numbers being different in the ground. This was not the case on my EXP II, as they both would have topped the charts. My buddy confirmed this on his DEUS also that the dollar and eagle hit the highest. Also learned that a .90 half nulled out in stock beach mode. Guess I'm done using that in the water without some modification. Can only imagine what i have missed. Any thought on this? Thanks JJ

 

[Jason in Enid]

Yep, that's correct. Pay attention to the FE line and don't cherry pick so much. You'll be surprised what the CTX is trying to tell you is under your feet.

Dollars like to read around 01-38, but they will change response based on what mode you are in!

 

[JJ]

Cherrypicking is a choice word. A person should have the option to occasionally skip penny signals when time doesn't allow. Apparently that will cost you big silver with the ctx. Not the case on most other machines. I think the ML engineers dropped the ball on this one placing big silver somewhere between an injun and copper cent. JMO, JJ

 

[DICKENS48]

I found a 1879 dollar at about 7" last summer it read 01-48 to 01-50 a solid hit

 

[JJ]

Thanks, I will definitely start watching the FE numbers more closely. Good advice Jason. Not sure why my Morgans air test MUCH lower than that in all modes. I like your numbers allot better Dickens. JJ

 

[Jason in Enid]

Cherrypicking is a choice word. A person should have the option to occasionally skip penny signals when time doesn't allow. Apparently that will cost you big silver with the ctx. Not the case on most other machines. I think the ML engineers dropped the ball on this one placing big silver somewhere between an injun and copper cent. JMO, JJ

Minelab didn't "drop the ball". They didn't pick and choose what targets would give what VDI numbers. The CTX technology is COMPLETELY different from every other type of detector. The number we get are what we get. You have to learn the machine, don't try to force it to do what you want.

PS, don't rely on what other people get for target responses. You will be better off to air-test your own targets with your settings and see what you get. The numbers from the ground will be very similar to the air numbers, typically only varying a couple of spots as the targets get really deep.

 

[JJ]

Cherrypicking is a choice word. A person should have the option to occasionally skip penny signals when time doesn't allow. Apparently that will cost you big silver with the ctx. Not the case on most other machines. I think the ML engineers dropped the ball on this one placing big silver somewhere between an injun and copper cent. JMO, JJ

Minelab didn't "drop the ball". They didn't pick and choose what targets would give what VDI numbers. The CTX technology is COMPLETELY different from every other type of detector. The number we get are what we get. You have to learn the machine, don't try to force it to do what you want.

PS, don't rely on what other people get for target responses. You will be better off to air-test your own targets with your settings and see what you get. The numbers from the ground will be very similar to the air numbers, typically only varying a couple of spots as the targets get really deep.

Ok, i get that no metallurgical test is being performed on the metal in question, and that the results of the CO numbers are really only a set of assigned coordinates (by ML engineers) on an X,Y axis. I'm not "forcing" the machine to give me any results, only questioning the logic behind the results I have found, looking for sound reason. JJ

 

[Jason in Enid]

I've never talked to anyone who has figured out why. There are probably some ML engineers who know, but so far that info seems "unknown". I can understand the FE number being so low, but it would seem the CO should go higher, not lower. Oh well, it is what it is.

 

[JJ]

Thanks for the feedback Jason.

 

[dkvodopich]

Found my first Morgan last week, came in 12:43 12:44

 

[Jason in Enid]

Found my first Morgan last week, came in 12:43 12:44

Sounds like you were using either combined or ferrous coin.

 

[INSAYN]

Are we sure that the Morgans are real? Just thinking out loud.

 

[dkvodopich]

Yes, ferrous coin

 

[amberjack]

ferrous coin is the best mode for solid id ing but the best for finding stuff so if it sounds good out it comes !


AJ

 

[DICKENS48]

I went and air checked the silver dollar I found last summer at 7" on high trash 01-38 to 01-40 when running FC combined 12-43 to 12-44

 

[JamesBondaka]

You would think silver dollars would be "screaming" at you saying, dig me, dig me....that is not necessarily the case. The numbers can be off and they can sneak past you. As a matter of fact, most machines aren't really designed for silver dollars as they aren't found very much these days. I know some have almost "deleted" the dollar "configuration" as they think it wont be used.

The problem gets worse if you have several silver dollars together. Your machine may not register them at all....or small signals....at different angles. Most machines are looking for one coin....not a group of them.....together.

A solid group of several dollars may be the hardest thing to find for your Ctx. There are other machines that will find them as a group.

 

[bklein]

Why do you say FC is best for IDing when it puts bottlecaps etc into the 12 range? End up digging more trash.
All other modes keep ID fairly same range as far as I know.

 

[mcb613]

Yup, low FE numberd are due to using a "trash" mode. Slso, the 3030 isnt good with air tests; much differrnt story in the ground.