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All coins on the ETrac have a ferrous value of 12??:confused:

D

digitrich

New member
That can't be right, is it??? If the ferrous values of a dime(03) and of a nickel(11) and of a zinc penny(6) And a quarter(00); varied before on the SE and they increased the 32 ferrous stops on the SE (0-31) to the now 35 stops (1-35) on the ETrac, how is it possible now that the ferrous values are all the same on all four coins at a value of 12? If anything, by increasing the number of ferrous stops, the variance between these coin's ferrous values should increase even further apart...not be the same. Anyone else finding a different result??:shrug:
 
I went on the Minelab website for the E-TRAC and found this under the FAQ section:


Straightened coins position
The ferrous coordinate of most coins in air is 12 +/-1, with slight deviations at the very high conductivity end. This makes it easier to remember the ID's of targets of interest or to note anomalies.
 
You've checked and double-checked this? With them increasing the Ferrous segments your logic should make sense. Something has to be amiss. I don't have one so I can't verify this. I'm sure someone who has one will make the same general test as you did.
 
christopher-ohio said:
I went on the Minelab website for the E-TRAC and found this under the FAQ section:


Straightened coins position
The ferrous coordinate of most coins in air is 12 +/-1, with slight deviations at the very high conductivity end. This makes it easier to remember the ID's of targets of interest or to note anomalies.
Click to expand...

So what kind of magic happens when it's in the ground to reveal true ferrous content? Being in the ground can obviously change this but you already have a skewed value?

How can it be easier to remember when all the coins have 12 for ferrous content when it's not a true indication?

Unless their is a built in buffer of some sort that does this when air testing but when it senses ground it "opens it up"?
 
I don't have mine yet, not till Tuesday. I was just wondering why the "flat" ferrous values. That may have been done to make the machine quicker, but that is going to be less than cool for some objects of trash that now will hit at the same place as coins that used to not be a "problem", such as screw tops. I am hoping different.
 
BarnacleBill said:
n/t
Click to expand...

That obviously is some of it and of course our thoughts are grooved into this automatically.

Minelab did give us a manual but for obvious reasons they didn't explain every feature from a hyper-technical view as to the reason for every little adjustment compared to the older SE model.
 
I've got an SE, and have never worried about the FE numbers on Australian coins, as they seem to go all over the place, but the Conductive numbers seem to stay closer to gether. Our $1 coin is 6F - 27Con
$2 7F - 26Con Both these coins will read 8 25 at about 6" And quite often will read 30F - 31Con when down 9" or more. Is that why they have given us more Conductivity numbers? LOL. I just listen to the sounds and use the Conductivity numbers to make an educated guess. I seem to have developer a 6th sense to weather it is a coin or not, But those bloody screw on caps still come in all over the coins, I can't get a sixth sense on them.LOL I detect 3 to 4 days a week, from 6 to 8 hours, but lately only about 4hrs a day. In 22 months since buying the SE I have found $5100, and cleaned out the biggest proportion of coins from all the footy fields in my area. If buying an E-Trac will get me 1/2 this amount in the future I will be a happy chappy. Bob
 
I sure hope they all don't sound the same in ferrous audio! I use smart screen and ferrous at all times.. well almost all times.. looks like more than just coins read 12 bu the previous posts.. I dont care how they read in digital but if they all sound the same I am screwed
 
christopher-ohio said:
I went on the Minelab website for the E-TRAC and found this under the FAQ section:


Straightened coins position
The ferrous coordinate of most coins in air is 12 +/-1, with slight deviations at the very high conductivity end. This makes it easier to remember the ID's of targets of interest or to note anomalies.
Click to expand...

But on this list here even dug coins were 12 AND a gold ring was 12???

Something is not right here. I would call/email :minelab: ASAP to at least get an explanation for this seemingly apparent discrepancy. Whether it be the fault of the user or some other explanation. At least you will have peace of mind knowing why.
 
From the readings provided on the large & small paper clips, plus straight pin. Then the next interesting target is iron or steel filings. A 16p nail and file or grinding wheel, yielding various sized little piles.

HH
BarnacleBill
 
I haven't used an E-Trac yet but the reason many of us hunt in Ferrous instead of Conductive Audio was because in Conductive Audio Iron that read in the upper left and coins that read in the upper right gave almost Identical high tones but in Ferrous the Iron was Low tone and the Coins High Tone. Now if the E-trac actually rejects iron as well as it did in the video of the coin between all the nails then we should be able to hunt in Conductive Audio and not have any problems with iron faking us out. Like you I hunt by sound and only look at the screen for verification. But the only way we will know for sure is to try it ourselves and see. JMHO

HH

Beachcomber
 
First off, I am not knocking the new Explorer that I don't have in hand yet and afterward I won't either, I don't believe Mine lab put out a detector with anything wrong with it. I won't have it until Tuesday. I just noticed people posting flat 12 ferrous readings on targets that the SE reads 11 ferrous stops apart (quarter-00 and nickel-11). My concern is (A). If the guys posting have the machine set up wrong and whether I will too. (B). There is something wrong with their machine that may also be wrong with mine come Tuesday that I should watch for. (C). The machine is supposed to react that way and then I need to decide if it is still the right machine for me. This is my reason for posting this as before I drop $1800 (1498, probe and tax) on Tuesday, I would like to know the answers to these questions. Tinfoil, whether the machine is in conduct or ferrous tones I don't believe will change the digital or smart find numbers or cursor position (doesn't on the other Explorers) The tone changes, not the digital #s. So tone hunters could hunt in conduct and still hear a tone difference, probably have to disc out nails though. I THINK, (don't know), that the ETrac is set up with common ferrous numbers because when you look at the coin patterns on MLO, they are discriminating out the entire bottom half of the screen, so it doesn't appear as though to much interesting stuff comes up higher than ferrous 15. From that, I would guess that all these coins do hit at 12 Ferrous which kind of sucks at some sites that have modern trash as several garbage targets are going to sneak in where coins usually hit. Like the F-75 with bottle caps. BUT if that is what they had to do to be able to give it reverse audible disc in real time where I can go in a site that's yielded 100 or so silver seated and pull out the remaining 75 left that I wouldn't have otherwise, well they got my vote. So I will see how that goes. I again implore anyone who has any info on this subject to please jump in and let us know if indeed most us coins are going to read ferrous 12, as well as which junk shares those same Ferrous/Conduct coordinates. Guess it's important to remember the whole ferrous/conduct scale is a Mine Lab made up scale, it doesn't have to be linear, mathematical or systematic, and it can be a bent scale, heck if it's a scale that says your fat.....Do we really care? I just want to find more stuff. Hopefully by tomorrow some people will have swung it in a trashy park and be able to give us the lowdown.:thumbup: Andy posted lower in this post and he "had a hand in it's design" Maybe he can give us a firm answer? Let's ask him.:shrug:
 
Hi

From what i can read on the minelab site and from the test done here im sure it works as it was engineered.

Im puzzled too but again, im used to the Explorer and its difficult to "master reset" my brain. hehe.

http://www.minelab.com/consumer/page.php?section=272&id=6&pId=25&pNm=E-Trac

Most coins will be recognized as ferrous 12 it states, in air. Slightly fluctating off 12 on high conductive coins.

You need to test with several dollars, several halfdollars and some other higher conductive objects in addition to several of the coins and object done in the previous test.

After noting the numbers both on flat coin and on 45 degree angle and on edge we can discuss it more.

Drop in a few pulltabs, screwcaps and steel bottlecaps in the test to and do it in factory relic mode, untouched so all can do it the same way.
 
I agree, we won't really why ML chose to engineer it that way, if it indeed is that way, until we take it out and hunt with it.
 
Chris from Ohio posted he couldn't get a reading on the bottle cap, I bet that was because he had it disced out at the time and it read a higher ferrous number then his pattern at the time would allow. As for the screw caps (12-37), I guess I could stay out of the ghetto, out from under the bridges, where people drink Night Train and such:drinking:. My only concern is I wish there was a way of separating memorial cents from Indians, I really, really won't like Indians and memorial cents both hitting at 12-37, that would be a deal killer in allot of sites I hunt, where I would have to use the ETrac for the silver and switch back to the SE for the Indians:thumbdown:. HOWEVER, in the sites where memorial cents on the SE would hit in the same spot as a silver dime, the new ETrac being able to distinguish between them is a God send:clapping: One other point to consider is GOLD coins:yikes: If the discrimination works as well as in the video, a guy could go to a coin shop and learn all the gold only coins into a pattern, go find a site where there was enough age and the possibility of a gold coin dropped and hunt with a larger coil. Sooner or later out would pop a gold coin, a feat which only a handful of guys have been able to accomplish with previous Explorers because that tight of a pattern would null over the tiny gold coin signals with the previous machines:super:. Ever hold one of those small gold US coins, they make a dime seem large.
 
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