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All metal and ferrous/ Why do I get a high pitched tone
- Thread starter Bob Lewis
- Start date
Bob and Cspene,
I have copied ~ and saved posts over time that I was interested in,
here's one that I have saved that may help us understand our Explorers reaction to iron...
~ QUOTE ~
"FERROUS and CONDUCTIVE Tones ~ by Jay Wollin."
(As with all Explorer users) You are probably interested in the advantages/disadvantages of ferrous vs. conductive.
I used to hunt always in conductive.
It works, and is pretty much like the tone system used in other detectors.
Silver and copper coins give a high signal, pull tabs mid tones, foil lower yet, and iron often a low growl.
This is the easiest method to "start" in and certainly finds coins.
However, you may have noticed with other detectors you dig a LOT of iron, particularly rusty iron- cause it sounds like coins
(and, without realizing it, you are probably missing many coins that are deep and sound more like iron).
On the Explorer pesky nails often appear at the top of the screen (when looking at crosshairs on Smart screen), usually in the far left upper corner.
Silver and copper coins also appear at or very near the top of the screen- but mostly toward the right side of the screen.
So- when using "conductive" sounds, where the high tones are for items appearing at the top of the screen, a nail can sound much like a coin. If you are searching an area loaded with bits of iron and nails this can be REALLY annoying and frustrating; with much practice you can tell the subtle differences between iron and coin but there is a better way.
Here is where the unique "Ferrous" sound option of the Explorer comes in.
In Ferrous sounds, the RIGHT side (not top side) gives the high tone, and left side gives low tone- since most iron falls along the far left side, and coins toward right side; now iron sounds totally different than a coin.
Iron is a low bleat, coin a nice high tone.
In theory, this makes it MUCH easier to ferret out coins in an iron-infested field.
Since most everywhere I hunt has lots of iron and nails, I use ferrous almost exclusively.
BUT this is not a wonder drug, cause it opens up other confusions.
The worst are the devil's invention, "bottle tops"- steel crown seals, that closed the top of every old beer bottle and coke bottle.
Picnic areas have as many of these rusting hulks as ants.
And they appear on the screen in the LOWER right corner, and since they are near the right side of the screen, just like coins, they also give a high-pitched coin-like squeal.
(In conductive, being at the BOTTOM, they would give a low-pitched iron signal)
Fortunately a glance at where the crosshairs are on the smart screen (lower right) or numbers on the digital screen (a pair of very low numbers usually in single digits or close, like 03/08 ) immediately identify these as non-coins.
Remember a typical silver or copper coin has a reading of a low number (usually under 10) and then a high number in the 20s- like 03/28. ~ Very different.
Many people get rid of the pesky crown seals by simply blacking (discriminating) out the lower right corner of the screen as few other items of interest fall in the crown seal neighbourhood.
REMEMBER ~ these are NOT my words, and I hope I have not broken any copyright laws by re-posting another persons post...
HH
Snowy
I have copied ~ and saved posts over time that I was interested in,
here's one that I have saved that may help us understand our Explorers reaction to iron...
~ QUOTE ~
"FERROUS and CONDUCTIVE Tones ~ by Jay Wollin."
(As with all Explorer users) You are probably interested in the advantages/disadvantages of ferrous vs. conductive.
I used to hunt always in conductive.
It works, and is pretty much like the tone system used in other detectors.
Silver and copper coins give a high signal, pull tabs mid tones, foil lower yet, and iron often a low growl.
This is the easiest method to "start" in and certainly finds coins.
However, you may have noticed with other detectors you dig a LOT of iron, particularly rusty iron- cause it sounds like coins
(and, without realizing it, you are probably missing many coins that are deep and sound more like iron).
On the Explorer pesky nails often appear at the top of the screen (when looking at crosshairs on Smart screen), usually in the far left upper corner.
Silver and copper coins also appear at or very near the top of the screen- but mostly toward the right side of the screen.
So- when using "conductive" sounds, where the high tones are for items appearing at the top of the screen, a nail can sound much like a coin. If you are searching an area loaded with bits of iron and nails this can be REALLY annoying and frustrating; with much practice you can tell the subtle differences between iron and coin but there is a better way.
Here is where the unique "Ferrous" sound option of the Explorer comes in.
In Ferrous sounds, the RIGHT side (not top side) gives the high tone, and left side gives low tone- since most iron falls along the far left side, and coins toward right side; now iron sounds totally different than a coin.
Iron is a low bleat, coin a nice high tone.
In theory, this makes it MUCH easier to ferret out coins in an iron-infested field.
Since most everywhere I hunt has lots of iron and nails, I use ferrous almost exclusively.
BUT this is not a wonder drug, cause it opens up other confusions.
The worst are the devil's invention, "bottle tops"- steel crown seals, that closed the top of every old beer bottle and coke bottle.
Picnic areas have as many of these rusting hulks as ants.
And they appear on the screen in the LOWER right corner, and since they are near the right side of the screen, just like coins, they also give a high-pitched coin-like squeal.
(In conductive, being at the BOTTOM, they would give a low-pitched iron signal)
Fortunately a glance at where the crosshairs are on the smart screen (lower right) or numbers on the digital screen (a pair of very low numbers usually in single digits or close, like 03/08 ) immediately identify these as non-coins.
Remember a typical silver or copper coin has a reading of a low number (usually under 10) and then a high number in the 20s- like 03/28. ~ Very different.
Many people get rid of the pesky crown seals by simply blacking (discriminating) out the lower right corner of the screen as few other items of interest fall in the crown seal neighbourhood.
REMEMBER ~ these are NOT my words, and I hope I have not broken any copyright laws by re-posting another persons post...
HH
Snowy
Chris(SoCenWI)
Well-known member
Bob,
Most of the time iron targets willl hit upper left and using ferrous tones makes these sound low tone. Iron falsing hits upper right and will sound like a copper/silver target whether you are running in Ferrous or Conduct. The problem you are seeing is that the tones update quicker than the target icon so you are hearing a right side hit while the icon/numbers are dilly dallying someplace else.
I've (We've all) found that large deep iron targets, rusty square nails, thumb tacks and other round iron targets, and sometimes several iron targets together can cause falsing that sounds and behaves much like a good target. Usually iron falsing will hit a little lower on the right side than good targets, and will often pinpoint in the different location that it hits in regular detect mode.
With experience you can tell when you are getting iron falsing but unfortunately real deep targets or targets mixed with iron can sound much the same. Many of my best finds have been iffy sounding targets like these.
Chris
Most of the time iron targets willl hit upper left and using ferrous tones makes these sound low tone. Iron falsing hits upper right and will sound like a copper/silver target whether you are running in Ferrous or Conduct. The problem you are seeing is that the tones update quicker than the target icon so you are hearing a right side hit while the icon/numbers are dilly dallying someplace else.
I've (We've all) found that large deep iron targets, rusty square nails, thumb tacks and other round iron targets, and sometimes several iron targets together can cause falsing that sounds and behaves much like a good target. Usually iron falsing will hit a little lower on the right side than good targets, and will often pinpoint in the different location that it hits in regular detect mode.
With experience you can tell when you are getting iron falsing but unfortunately real deep targets or targets mixed with iron can sound much the same. Many of my best finds have been iffy sounding targets like these.
Chris
The tone for silver & copper coins....I've only had my SE for a little over a week & can tell the difference in the pitch...Coins are giving off a slightly less sharp, lower tone that sounds more "Round" if that makes sense...In my head I've got it pinned as the "Flute" sound...I'm constantly glancing at my screen when I get signals, just to be sure the crosshairs are where I think they should be...The first target I dug this morning was a 48 Quarter...."ARE YOU LISTENING ARTURO"???? I get better every time I go out, as far as being able to I.D. by sound...But the crosshairs seldom lie...HH...TT
Around 30,to 26. The little 4.5"X7" excellerator coil you can run at 32. Vol max, Limits Max. Variability Max. gain 6 or 7, Ferrous %100 of the time. Deep on or if in the trash and Iron deep off fast on. always run wide open AM 100% of the time and all white screens 100% of the time. Very low threshold tone for the low ferrous sound. I run digital majority of the time. However I have learned over the years that the tone is far more accurate then the numbers or the cross hairs when you are in the Iron and trash. I very seldom ever get to hunt a area that don't have a lot of trash and iron. If you learn to hunt the iron and the trash everything else is a piece of cake. Trust the tone more then the cross hairs or the digital numbers. You will learn when you got one mixed in with the iron and when it is just iron falsing to a high tone. With the tones you will even be able to tell the bottle caps and the wine screw on caps. Just trust in the tones. 
: : . It will make you a little 
at first but that is just part of learning the machine. You just got to pay your dues but it will all come together one day. Ask James or Rick out in N.D. . That is what they will tell you. Later Jerry aka Tinfoil.
: : . It will make you a little at first but that is just part of learning the machine. You just got to pay your dues but it will all come together one day. Ask James or Rick out in N.D. . That is what they will tell you. Later Jerry aka Tinfoil.Targets with the new Target ID in pinpoint mode. You do have to be centered over the target but you can pick out the different targets that are mixed in with one another. Really a neat add on for the SE. Works great after you figure out how to use it. Later and HH Jerry aka Tinfoil.
Bob, I know with my Garrett GTI2500 that large rust-rotted iron could be a nuisance, ~ so we rejected the last high end notch...( The silver/copper end of the scale. )
After that we had a lot less trouble with large iron, but still got all our coppers and silvers.
There is a 180 degree discriminate/conductivity scale used by Tesoro that shows conductivities from ferrite right through to the high end silver/copper;
and the very last and highest conductivity item is an iron man-hole cover.
I feel that this indicates that large iron doesn't read like smaller ( usual ) iron we encounter.
Maybe this is why we get high pitched audio from SOME iron...
Here's a diagram of the 180 degree discrimination scale .
[attachment 41120 Discchart.jpg]
HH
Snowy
After that we had a lot less trouble with large iron, but still got all our coppers and silvers.
There is a 180 degree discriminate/conductivity scale used by Tesoro that shows conductivities from ferrite right through to the high end silver/copper;
and the very last and highest conductivity item is an iron man-hole cover.
I feel that this indicates that large iron doesn't read like smaller ( usual ) iron we encounter.
Maybe this is why we get high pitched audio from SOME iron...
Here's a diagram of the 180 degree discrimination scale .
[attachment 41120 Discchart.jpg]
HH
Snowy
Arturo de Zorro
New member
How can anyone give you advise, But here goes anyway, I have my Back button set to change from conduct to ferrous and when I get an iffy target it gets checked out in both c/f if I get a low tone in either one I am not digging, but maybe thats why I haven't found 31 large cents or 2 Reales.
coppers all came in like pennies until you pulled a plug. Most were 12 - 14 inches. Half Reales come in like pennies in most cases. I just dug a Large cent tonight that came in like a zink. It pays to dig it all in the coin range if you are hunting where its possible to find old coins as much as we hate zinks.