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Glenn, Conductive and Ferrous Tones

A

Anonymous

Guest
Glenn, let me ask a question and of course anyone is welcome to answer? If the detector is set for Conductive tones the only difference between that and Ferrous is the tones. Nothing else is changed. The highest tone in Conductive sounds is at a level of 31. Anywhere across the vertical axis is 31 and we hear the highest tone. The target can be at any level of ferrous content but has a conductivity that is the same as silver or 31. If we consider 31 points across the screen then the highest tone is for 31 points <span style="background-color:#ffff00;">at some ferrous content</span>.
However, if I go to Ferrous sounds the highest tones is for the least ferrous content and lowest tone is for most ferrous. If I hear the highest tone I know it is a target with the least ferrous content which is the lower right of the dispaly so is in the nonferrous area. I know that a mid tone is the dividing line between ferrous and nonferrous. There are 31 points for ferrous tones.
Ferrous tones move me on the inductance axis but conductivity is really conductance and only expresses the eddy current conducting properties of the metal. I am more interested in the inductance to move me into the nonferrous zone so know low tones are more likely for relics adn high tones are more likely for coins. I don
 
I don't have much of a reply, maybe a little.
Here's a question/comment for you.
I believe an Explorer user that knows Conductive very well would be able to make the ajustment to ferrous much easier than if roles were reversed. Actually, I'm sure of that, and with only the sounds being different, it seems rather odd. Ferrous must be more appealing to new users ears when hunting in iron, but I don't think it's any better. I have a few years in on conductive sounds, and out of those years have several months running in ferrous. I have no problem in iron switching to ferrous and find the detector to work exactly the same way. The whole idea of hunting in iron for either mode is being able to recognize the blending of a good target, and bad. Ferrous may seem much easier in that respect, but it's still about being able to hear that spec of a good target in the mix. In conductive a small target such as a cuff button will be a very low tone blip, and probably in a null surrounded with high tone falsing (if running hot) The same small button in ferrous will be just at the blending point of where the low and high tones meet. Both modes see that target, but if you're not taking your time, and using shorter wiggle swings in iron, you will likely not hear it in the first place. A couple of years ago an Explorer user called me over to hear a few of these very small targets, and what I was hearing just sounded like a mix of crap. Now about 2 years later after many hours in, and changing my ways a little, what is a digable target for me is very diferent than before. If it wasn't for hunting with him, along with the time I spent on this thing, I'm sure I would be missing a few I now get.
PS The one thing both modes have in common is... those spec of signals... you can forget about seeing them on an ID screen. They will always read in iron.
 
Interesting and good points. New users would most likely do better with Conductive tones then learn ferrous is great advice.
HH, Cody
 
Cody,
YOU STATED:
<span style="background-color:#ffff00;">However, if I go to Ferrous sounds the highest tones is for the least ferrous content and lowest tone is for most ferrous. If I hear the highest tone I know it is a target with the least ferrous content which is the lower right of the dispaly so is in the nonferrous area. I know that a mid tone is the dividing line between ferrous and nonferrous. There are 31 points for ferrous tones. </span>
MY RESONSE:
The highest ferrous tones are at the right side of the screen, but they can be at any vertical position along the right side.
YOU STATED:
<span style="background-color:#ffff00;">Ferrous tones move me on the inductance axis but conductivity is really conductance and only expresses the eddy current conducting properties of the metal. I am more interested in the inductance to move me into the nonferrous zone so know low tones are more likely for relics adn high tones are more likely for coins. I don
 
Hearing differences, personal preferences and above all our choice of audio settings and it all comes down to what works for us..Reasonable assumption one would think...
 
I am in with EXPII just for 5 months and 50% hunting buttons in iron laden my neck of the woods so that was the great advice to change to Conductive. Thanks!
 
A couple of things that I stated need corrections/clarifications.
I used the term "ferrosity" because of what we call the ferrous component of the target. In light of this definition "ferrosity" and "permeability" are essentially one in the same.
<span style="background-color:#ffff00;">#3.1 There is no such thing as "non-ferrous" material.</span>
This statement is based upon the definition that ferrousity (permeability) is the ability to conduct a magnetic field. Since even a vacuum will conduct a magnetic field, it will have a ferrous component. <STRONG>This does not mean that all material has some level of iron content.</STRONG>
<span style="background-color:#ffff00;">A vacuum has a permeability of unity</span>
To be technically correct I should have stated that the permeability referred to is "relative permeability" which relates the permeability of any material to that of free space (a vacuum). Free space would naturally have a relative permeability of unity. The actual permeability of free space is approximately 12.6*10^(-7) henry/meter.
Sorry about the confusion.
Glenn
 
but most people I know have started in conductive and never looked back. I might be the only one out of many that has run ferrous for an extended period of time. Real short swings (like pinpointing) in iron from many directions is what seems to work best for buttons. Of course digging any targets that gives a hint of a non iron target goes without saying. It felt a little strange swinging that way as I was used to a long swing, but after I got used to it, and started detecting much more, everything just seemed to click. I am also lucky in the way that I have had a steady stream of new sites to hunt over the last few years.... and like the old adage... practice makes *almost* (in detecting terms) perfect.
PS To run on the settings I do in conductive I worked my way up to them over quite a long time. Basically it was raising the sens. a little and dropping the IM about a notch every month or two. High sens. and low IM even in iron is as noisey as hell, but it makes sense to me....now.
I'm jsut glad I'm to the pointg where I just pick up the detector and go. No more messing around, just digging!
 
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