Tesoro Compadre and a Broken Ring - Amazing Results

[DetectorOCD]

Hi POLEWAGGER
Thanks for the kind words. This is great hobby and it's nice to be able to share information about these great detectors. I also hope they help add to the enjoyment of the hobby as well.[/quote]

Here here, Mike! That's why I refuse to enable monitization on my youtube vids. I just want to share information and hunts. We need to do a youtube meetup sometime lol

 

[Reddog777]

So I just received my new Compadre this past week and finding it's an excellent detector. Although air tests don't necessarily give you a true look at how a detector will operate in the real world, they do have their place. I found a nice silver Irish Claddagh ring this past week and wanted to check it with my Compadre. The ring was broken in the thin part of the band and I did my best to straighten it out and make it look, well, more like a ring. As I ran the ring, with a slight gap in the band, over the coil, I found something very interesting. I'm sure many of you are aware of this, but I thought it would be good to post this test. I found the same results with my Vaquero.

http://www.youtube.com/watch?v=ImKxZve5KGw

Good video and nice findings mike5853
I currently hunt in a lake with my AT PRO and today I got a very strong but erractive singal (Vdi from the 40s to the upper 80s). I started to walk away but I dug it and it turn out to be a nice sterling ring with what look like a native floral design. Since all metals have there own conductivy, the broken area is like a open loop or a open circuit and a ring without the gap is like closed circut loop giving it a more solid signal to detectors. This, in my opinion, confuses the detectors. It sees it as being silver ( or gold) but not solid.

 

[Dirt Poor]

Thanks for sharing that!

 

[pkrska]

This is really good news and information for us newbies using the Compadre.

 

[REVIER]

I found out why broken rings are hard to pick up at any depth, and why chains are hard to pick up, also.
Someone else researched this, not me.

"When using a detector, and this varies greatly between what methods your detector uses, it creates a magnetic field that shoots into the ground. As you pass over a metal object, let's say a coin for now, it creates an electric current in that item. This current is called an Eddy Current. This current moves throughout the coin and creates its own magnetic field. This field is what the detector coil sees and interprets. It then takes all the input and either beeps a certain way, shows on a screen or both.

Now to the matter of different size, shape and wadding of items. These Eddy Currents flow differently depending on the items conductivity. Coins, nails, pull tabs, etc, have varied levels of conductivity and the detector usually reads them as what they are, but, if you change the shape of these items, say if a silver ring is not a "full" ring, or a is an unclasped silver necklace, or a peice of foil is wadded tightly, it will change the conductivity of that object. Not the conductivity of the metal mind you, just the way the current travels through the actual item.

To put it simply, lets say you have a full silver ring (a full O shape) and a silver ring that does not connect fully (basically a C shape), when the electric current passes through the full ring, it is able to travel in all directions easily, versus the incomplete ring, where it loses some current out of the broken ends."

And chains...

The magnetic field generated by the Eddy currents induced by the transmit coil on the targets are very small in the case of a chain. Basically, because of the contact resistance between each link is relatively high, the Eddy currents are each confined to a single link in the chain. So, each small link in effect becomes a target. Because each link is small, it can't generate a large field for the receive coil to detect. Also, the links are pointing in somewhat different directions, so their individual magnetic fields don't readily add up to a larger field which would make for easier detection.

For the above reasons, chains are hard to detect. What usually "give them away" is an attached medal, or a sturdily built clasp.

 

[Bucksport]

Thanks for posting this Revier. I have been wanting to post almost the same thing from a 2000 treasure magazine, but it seemed like a lot of typing lol. The one section that was left out of your post from the article -
"Gold is a high-conductivity metal, and if its shape is a non-broken ring, it is quickly saturated by the magnetic field applied and the eddy currents generated last longer and are more intense than would result if the same signal were applied to a coin of like diameter. The theory is that the higher the karat, the easier the ring would be to detect."