Testing Crypton OBMD-1

[J_Player]

Originally Posted by MIJ

Very interesting posts lads.

Ok so g-sani found a lead bullet but don’t forget that “copper and its alloys” come in many disguises there are about 400 different compositions see hear from Wikipedia –

Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion. The best known traditional types are bronze, where tin is a significant addition, and brass, using zinc instead. Both these are imprecise terms, and today the term copper alloy tends to be substituted, especially by museums.[1]

The similarity in external appearance of the various alloys, along with the different combinations of elements used when making each alloy, can lead to confusion when categorizing the different compositions. There are as many as 400 different copper and copper-alloy compositions loosely grouped into the categories: copper, high copper alloy, brasses, bronzes, copper nickels, copper–nickel–zinc (nickel silver), leaded copper, and special alloys. The following table lists the principal alloying element for four of the more common types used in modern industry, along with the name for each type. Historical types, such as those that characterize the Bronze Age, are vaguer as the mixtures were generally.

The Wilde Bore Brooch on my post header that I found in 1993, is classed as “copper alloy” but also has silver edging round the green enamelling, I have been offered £1500 for this find, this sort of find can definitely be worth looking for, and this is why I think that the Crypton having three search modes Au, Ag, Cu. Is a great idea.

By the way I also have a detecting test bed in my garden it’s by a willow tree about 30 meters away from my patio, “it’s about ten years old”

I buried a “gold ring” a “medieval hammered silver coin” and a “copper coin” about a meter apart and “Between 10 to 25 cm deep”

I use this to test metal detectors and always pick them up with my ranger tell examiner from 30 meters.

Hi MIJ,
The alloys used in wartime bullets could be any combination of alloys.
I have seen quite a few WWII bullets which have brass (copper-zinc) outer shells.
And there are also many pure lead bullets. But I wonder how pure these lead bullets are.
During WWII many countries had scarce supplies and were not so particular how pure their lead was, especially when used to make bullets.
They only cared that they are heavy enough to act as a bullet.

Along the same lines, we know that other buried metals are almost always alloys.
This includes the gold and silver and even platinum jewelry metals. But even base metals such as aluminum are alloys.
Different grades of aluminum have different alloys depending on the purpose of the aluminum.

If we are concerned about the portion of a buried alloy which corrodes and becomes ionized in the soil, I think we will find much less gold dissolving than we find dissolving from the smaller amount of silver alloyed into the same gold object.
For lead alloys, I know a lot of lead will dissolve into the soil to reach toxic levels.
But I also hear reports from LRL experimenters that they have a hard time to detect lead compared to other metals.
It makes me wonder if there is some other metal in the bullet that g-sani found.

I am amazed to hear your report for the Examiner locating your buried coins.
Can you say what model of Examiner you have?
I have tested a fairly recent Examiner TG model and a Deluxe model, and I found that nobody who tried it was able to locate anything with them so far.

Best wishes,
J_P

[MIJ]

Qiaozhi

I note your comment about my Ranger Tell that I mentioned in my post but it happens? I can’t explain why?

I think you understand me when I say that the RT some times works for me, but out in field test it gets completely confused and over whelmed by false signal lines.

I would hardly poke fun at the device “as in my post Unbelievable Rare Find with my RT E” if I thought that it worked properly and consistently.

J P
I bought my Examiner in 2006 and it was the just called the Ranger Tell Examiner, I give a brief mention using it in my very first thread I posted hear http://www.longrangelocators.com/forums/showthread.php?t=18267

I would be happy to discuss the RT unit but I think we should do it in the LRL section or we will get a slap on the bum.