Testing machine

[Anonymous]

I really don't know how discrimination works with depth, on an Explorer. But on just about all the older detectors it made a major difference. When the Fisher CZ 6 came out that was one of the things that they said was different with it, as it didn't change the depth much if you used discrimination, as it had most all the other ones. So maybe Minelab, learned something from what Fisher came up with and it might not be a problem. Although having said that, I will say this. The Fisher manual said, "the discrimination level has little if any effect on the depth capability of the CZ6. Note, however, that the all-metal Autotune mode has a wider search pattern and may detect a little deeper. Of course I read that to say it does make some difference, right?

 

[Anonymous]

Thanks to all that responded to this inquire. It was asked how my machine is set up. That is a fair question. I have tried different settings. But currently I currently use a setting I found on one if the websites as suggested by this forum.
My machine is wide open. I do not remember all the settings, and excuse my spelling. +26, -16, deep, ferrous, max difference in sounds, max volume, -3 threshold.
I believe I may have missed old silver when because I do not dig a big hole to find the object. I use a plugger that pulls out a 4 inch round hold from the ground. The object would not be in the plug and I loose the tone. I believe the problem here is that I have disturbed the dirt and the air does not pick it up.
In the future I will dig a bigger hole.
I also do not have a probe attached to my machine. I use a hand device. It works well if I have missed the object by an inch or two. I my need to explore spending the money for the attachable probe.
Also I do not believe my area Nashville, TN is very good for the old coins. There were some hard core detectors years ahead of me that have canvassed the good spots, and most of the parks will not allow you to hunt because of the civil war areas and such.
I have moved my sites to up in Kentucky where I believe there will be better places to explore.
Thanks again for all the postings.
Happy detecting!
LD

 

[Anonymous]

Glenn,
Agree with what you say. In my experience discrimination doesn't impede detection at depth as a first order effect. If a coin is going to hit upper right every sweep you could have the whole display blacked out except for that immediate area and still get it at depth.
Unfortunately as we all know co-located trash and ground mineralization causes targets to hit away from where they hit naked, and this gets worse as they get deeper. It is only the shallower targets that hit strongly enough to show up in the expected locations and get heard through the discrimination patterns. This is why I believe many think it is the discrimination that is causing loss of depth, but it is not really the discrimination per se.
Rereading your post I think you said the exact same thing, just more succinctly.
Don't think the teach out noise method would work well with most noise. If I crank the sens in a noisy environment it seems to be pretty random where the cursor hits, but may have to try this again.
Chris

 

[Anonymous]

Charles,
Did the same experiment as you a couple of years ago. Tied the outside(shield) of coil connector to outlet ground in the house and could immediately run much hotter.
I tried pounding a ground stake in and doing the same outdoors with no noticable difference. I'm not sure I used a deep enough grounding stake, or a heavy enough ground cable.
Long story short not very practicable. But if I ever find a real productive spot that can only run low sensitivity because of powerlines may give it another shot.
Some of my work involves very low voltage sensors running near servo motors and it is pretty amazing how much noise can be picked up once you get a ways away from your grounding point.
Chris