6000 di pro coin depth ???? how deep

[michael1963]

bought a 6000 di pr set it on factory preset settings and buried some coins
silverhalf dollar at 5.50- silver quarter at 3.00- silver dime at 2.00
silver indian head nickle at5.00-modern penny at2.00
good signal on all except half dollar had broken signal
i was expecting more depth a lot more than 5.5 - what is the average depth on old coins
thanks

 

[Elton]

n/t

 

[pappygol]

there are 2 things that will cause this. you either need to send your machine to whites for repair. or you have got to ground balance the machine. the trigger on the handle and on the box will do this for you. these machines are quite different from most. but once you get use to it, it will perform wonderfully. i have several of these. they will air test a dime at 7 inches. a half dollar at 12. you need to work with the machine. and read the instructions. read. read. read. most people dint work enough with them and get fed up and quit. then they go spend way too much money on a new model . i love the old whites. i have parts if you need them. good luck

 

[chuck ky]

freshly buried coins won't give you as good depth as ones that have been in the ground a while.

 

[pappygol]

thats for sure. the longer a coin, or any metal object is buried. creates a halo effect. which make the footprint of the coin much bigger. as it seeps into the ground. kinda soaks the ground around it with the (smell) of it. thats why a dime might air test at 6 inches. and a dime thats been buried for a year will read loud and clear at 10 inches.

 

[bfodnes]

I tend to disagree and have found a different way to explain the phenomenon.

When we talk halo, only iron leak enough of its solid metal into the surrounding dirt to make it look much bigger to the detector and we all know that we dont want that to happen.

Gold have no leakage at all, silver has unmeasurable leakage and what leak is actually not the silver but the small amounts of copper that is in the silver coinage.

But,,, you will see that a coin can be detected deeper in undisturbed soil then in air if the soil is low in minerals. That is because compacted soil is a better conductor then freshly compacted soil. not only that but the surface of the object is fully enclosed in the dirt, that you see when you dig a coin. the print of the coin is visible in the dirt. Never with a week or even year old coins.

It is easy to confirm this to a point. When you dig an old coin and still has it in the bottom of the hole at 7 inches. just pour in the dirt again and compact it. the signal will be less then before and you have not touched the so called halo. You can even dig the coin visible in thr bottom and just loosen it in the resting place with all the " halo" still surrounding it. Fill the hole and it is gone.....

The iron halo however does havoc. It grows big and masks out coins in huge numbers still in the ground at 4-6 inches.

 

[Mr.Bill]

It's all about the ground matrix.

Any doubters of it should remove the target carefully, and see if the detector can detect the "Halo". If it was doing what they thought it did, the detector will respond to it.

 

[pappygol]

Remember that newly buried objects, especially coins, will be somewhat more difficult to detect than items that have been buried for some time. This is primarily a metallurgical phenomenon. Experiment with various settings of the Trash Elimination control to see how your Master Hunter responds. Practice trying to pinpoint and locate targets precisely. Use both the manual and the electronic methods of pinpointing. THESE ARE THE EXACT WORDS FROM A VERY FAMOUS DETECTORIST. YOU CAN EMAIL HIM AND TELL HIM HE IS WRONG. HIS NAME IS CHARLES GARRETT. EMAIL @, GARRETTMETALDETECTORS.COM

 

[Mr.Bill]

What you stated from Charles Garrett is not a halo fact. What he stated is that a freshly buried target is hard to detect, Absolutely. This is because of the disturbed soil, not because of a make believe halo not being there.

Remember that newly buried objects, especially coins, will be somewhat more difficult to detect than items that have been buried for some time.

 

[pappygol]

so what is the metallurgical phenonemon?????

 

[bfodnes]

Think of the metal as beeing better " grounded ",, hmmmm

Maybe not the best term but explains that a long buried object have a better current bearing towards the surface.

Rememer, lots of people believe in the Halo effect, It doesnt fit my testing though other then for iron.

So it is not a positive factor at all. We must dig iron, small pieces can hide coins at very shallow depth.