MINELAB MANTICORE: DATA & PERFORMANCE

viper...... THAT would be a BIG update!!! (((And a HIGHLY wanted feature/update)))!!!

NASA-Tom,

Thanks. Good to know. It just reinforces that while a coin in clean ground will offer the nice "dot" on the 2-D display, any trash in the ground alters the situation considerably, with respect to the target plot. Great reminder and demonstration that the "ears" still rule over the "eyes," hands down, even when dealing with detectors with the most advanced (to this point) "visual" on-screen assistance...

Steve

NASA-Tom Wrote:
-------------------------------------------------------
> Steve........ absolutely! NAILS!!!!
> And to the point of startlization!
>
> I don't think Mfr's are even aware of the HIGH
> order-of-magnitude ....of just how BAD the 'nails
> population' truly is.

Tom, when you detected that 18 x 60 strip, in audio only, what audio settings do you use? Tnx

1-Region All-Tones

This audio configuration presents the best/most polyphonic audio clarity. VERY 'telling'.... audibly!

Volume = 25
Iron Volume = 2

Tom's post from a different topic.

Gosh. Let me premise with this: If I do NOT explain this to a good level of understanding......LET ME KNOW!!!
(((Here goes))) =

On a TRUE All Metal Mode........ ANY piece of metal....... makes the metal detector go: "BEEP". On 'some' detectors......... the VDI still works.......giving ONLY a 'visual' ID of the target......,,,,,,,,........ in a true All Metal Mode; yet, you still get a ZERO VARYING TONES ((no 'tone' ID)): "beep". Absolutely zero items (targets) are discriminated/notched out.... in a true All Metal Mode.

On Manticore.,.,.,.,., if you are in a Park Mode, a Beach Mode......a Field Mode.......,,,,,,,,,,,...............,,,,,,,,,,,,,,,,,................. these are all ID Modes. NOT to be confused with "All Metal" Mode.......by definition. Yes...... in these Modes..... you can "bring in" all metals. , . , . , . , and all metal targets will be assigned a 'tone' for ID purposes. , . , . , . but/yet....... this does not constitute "ALL METAL" Mode........ by definition. They are still: ID Modes.

So. What does this have to do with: Ferrous Limits = Upper. And: Ferrous Limits = Lower?
On Manticore...... you MUST be in a ID Mode.....in order to employ Upper & Lower Ferrous Limits.

First......... let's talk about 'iron'.
Different iron items WILL have different ID's. JUST LIKE NON-FERROUS!!! A silver coin...... has a dramatically different conductivity then compared to a Nickel. , . , . , . , . , . , . , . and .... you will get a different ID for a silver coin...... as compared to the Nickel.
SAME WITH IRON! A rusty nail will have a certain ID. A piece of barbed-wire fence....will have a DIFFERENT ID as compared to a rusty nail. A steel fish hook will have yet ANOTHER different ID ...... as compared to a rusty nail. A iron boot-tack has IT'S own differing ID. A rusty bobby-pin has a certain unique ID. All iron implements have different ID's.

Adjustable iron Discrimination can do WONDERS....... in the world of unmasking.
If you are hunting a nail-infested site with Manticore.........................where there are tons of nails; yet,.......... there are no steel fish hooks, no steel bobby-pins...... no rusty barbed-wire fence pieces . , . , . , . , . , . , . , . , . , . , . , . , . it may be VERY advantageous to 'push-the-limits' deeper into the iron Discrimination via Upper & Lower Ferrous Limits.

There is a huge write-up/explanation in the old (huge) Fisher F75 thread ...on this forum.........about hair-splitting iron Discrimination uses.,.,.,.,. to include High Resolution Iron Discrimination.

Let me give just one example:
Let's say...... the site you are hunting.,.,.,., most of the iron (rusty nails) ID in the ID range of -47 to -38. (Read = Negative 47 to Negative 38). Remember..... iron/ferrous ID's in the Negative numbers range.
Now let's say you have a silver dime at 8" deep....... and a rusty nail over top of the silver dime ...at 7" deep. (((Nail and Dime on top of each other.,.,.,.,., one at 7" deep......and the other at 8" deep))). The Manticore may ID this composite nail+coin combination as -17.
You say: WAIT!!!! Almost all nails ID around -45... at this site. What could possibly ID as high as -17??? Hmmmmmmmmmmm.
So..................... you adjust Ferrous Limits = Upper (on your Manticore) from a factory conservative 'safe' setting of 9........ down to 4....(which is aggressive as perdition!).
NOW targets that ID (say) -30 (read = Negative 30)....... and above .....,,,,,,...... will NOW ID somewhere in the non-ferrous tone range!
And now.............. you just recovered a silver Barber Dime .....underneath a nail !!!
Was the audio signal: a nice textbook-perfect "coin tone"? Nope!!!! Not at all. BUT....... you just unmasked a non-ferrous target....... in a carpet of nails...................that.....................never in the history of mankind.................has been performed before.
NASA-Tom