TTF Observation

[Goes4ever]

yes Ray, I agree 100%......this year I have dug MANY, MANY deep indians, a few wheats, a some silver as well that read 01 on the ferrous side! I'd would much rather see 01 on the FE side than 18 or 20!

 

[Big Boys Hobbies]

Moisture makes a BIG part of it!

 

[mikeothmer]

I dug a penny this morning that read a solid 19-41 in 4 directions at 4 inches. I was in multi tones conductive. The penny was a 1996 D

 

[stasys]

Sadly but we, you and I, cant adjust iron rejection level in TTF, what sounds low in TTF its decided by Minelab and in most situation its perfect iron, but in some extreme situation its not. Tone one is good and useful, but its different setting for very special detecting.
My suggestion for new Etrac users dont be to exited about TTF, better use Conductive but not Two Tones Ferrous, because in Conductive with threshold its much more easy to set right High Manual sensitivity in Iron infested sites. If in conductive you will hear allot nulling, this is good signal that sensitivity is up to high, for comparison in TTF you will hear just Low iron target sound and you will think --Grate I can hear all the targets now--- but in reality you will hear allot Iron deeper or all around and this will mask more good targets shallower. hearing allot Iron and knowing when is to much is much more harder than simply lower Sensitivity to hear less Nuling in Conductive.

Stasys - Thanks for your response. I don't understand your meaning regarding " hear allot nulling, this is good signal that sensitivity is up to high". Can you help me understand? My hunt areas have thousands of bits of rusting particles from 150 years of trash and farm implements that are real targets that can be dug up. Are you talking in the context of iron mineralization that occurs naturally versus man made particles? I don't want to turn my sensitivity down and lose depth. When I move further out to the middle of the fields away from the old homes both ferrous and conductive tones become infrequent and I'm left with a quiet running machine(28 manual sens). I'm not sure I understand your reasoning behind the sensitivity reduction unless your thinking my machine is falsing and unstable.

Goes4ever - Thanks for your input, it was very nice articulated.

And thanks to everyone contributing to my ETRAC education on this thread.

Arnie

Arnie maybe should be like this-If in conductive you will hear allot nulling, this is sign that sensitivity is up to high. Arnie you have to remember that you never will get coin under the iron, on iron its possible near iron too, but not under. make few test with coin and similar size iron and you will see. no point using high sensitivity where allot iron nails and different iron pieces. you will not get signal from deeper targets if between coil and this targets are discriminated targets, because TTF is still audio discrimination and you will hear respond from target what is close to the coil.

 

[Goes4ever]

in TTF you can and WILL get coins UNDER iron, I have found em many times, coins with nails right on top, coins even had iron stains on them

 

[stasys]

in TTF you can and WILL get coins UNDER iron, I have found em many times, coins with nails right on top, coins even had iron stains on them

Right on top yes,because coin or conductive metal raise iron conductivity, but not under, lets say 1 inch.

 

[Goes4ever]

in TTF you can and WILL get coins UNDER iron, I have found em many times, coins with nails right on top, coins even had iron stains on them

Right on top yes,because coin or conductive metal raise iron conductivity, but not under, lets say 1 inch.

well not sure of your experience of finds, but I have pulled 2-3 nails out, keep digging down and found coins under them

 

[Djay-Mo]

At one place I hunted this year I found 4 mercs and 2 barber dimes that were 5 inchs or less deep and none of them had a ferrous number less than 20.They all bounced between 20 and 25 ferrous.Nothing was in the hole with any of them.It was either a highly mineralized spot or alot of really fine pieces of iron.I run into this alot.
Thats probably why other detectorist had passed them by because the owner told me there had been several already detected it.
And I'm sure that some of you guys that dig in the really good great- plains dirt find that hard to believe but its the truth.
One of these days I'll own a video cam and make a video that will surprise alot of you.

I have dug coins with nails on them and under them in conductive multitone,I think it does as good or better at iron seperation than TTF and its much easier on my ears. JMO.

 

[Goes4ever]

Just want to CLARIFY here that I am not trying to persaude anyone into using TTF. I said before and will say again. I'd prefer to use conductive 100% of the time, but there are times when TTF is better. I am not here to argue, persaude or anything at all about TTF.

TTF is merely one more weapon to have in your arsenal. Some people don't like it, some love it. If you don't give it a chance you will never realize how great is in WHEN IT IS NEEDED. That is all I am stating. Some sites I hunt it is absolutely, positively needed. I have sites where you will not find a single item in conductive, you can say all you want that you will hear good stuff thru the null, well yes maybe sometimes, but on these sites you will DEFINATELY hear all or most of the non ferrous targets...if using TTF

I use conductive sounds 90% of the time and TTF only 10% of the time. I will say it again and again, it is powerful, but ONLY if you KNOW how to use it. And you WILL find stuff in TTF that is not heard in conductive. If you choose to never try it, or give it enough time to learn it, no big deal. 90% of targets can be found in conductive.

 

[TheMarshall]

Thanks for the explanations. I'm trying to understand this better so I appreciate everyone's help.

Question:

If I select all metal pattern and TTF, then everything FE 17-35 would default to a low tone and everything above (<17-1) would emit high tones. Is this correct?

If so, the only difference between my setup and TheMarshall's is I am hearing all the lows (no disc) while his machine runs quiet until something comes in above FE 27. So for his machine the TTF range where lows and highs can be heard is from FE27 - 1........... correct? To summarize: He's ignoring (discng out) iron from 35-27, from 27-17 he gets a low tone and from below17 - 1 he gets a high tone?

Am I understanding this correctly?

Thanks gents!

Arnie

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Thanks for your replies...John, Arnie....

Yes, Arnie, your reply indicates a full understanding of my suggested mode of operating.

The aim is to examine ANY target that invokes an audio response, be it low or high.....or whatever audio you select 1, 2, 4, 0/99 (VCO)...Long etc.

Forget about the possible broken state of some difficult targets.....circle such targets whilst scanning through the full 360 degrees.

If the sounds keep occurring....THEN GO For IT.

DON'T BE 'FOOLED or PUT-OFF when you pin-point it and see any persistent cursor hogging the IRON corner

Pin-Point mode is ALL-METAL...so you temporarily loose the benefit of your 'Mask'..

Also, don't be 'putt-off' by the cursor jumping down into the 'masked' area when pin-pointing in your search screen....Again, it's the E-Trac reacting to the strongest signal.

An 'OPEN' screen allows the E-TRAC to vector onto ferrous object nearby, that is normal, for they are HUNDREDS of times more detectable than any ' none-ferrous' target.

Pin-point the 'iron' and remove it.....(Love my Garrett PP)....THEN go and get the non-ferrous target nearby that triggered your audio.

I've done that dozens of times...got pictures to show the results.

Whatever way you decide to hunt, I'm sure you will give a good account in your obvious pursuit of 'good practices'..

So "Good-night" from here in the UK.....it's almost 3 am. and I've just finished the last of the Xmas nuts !!!!!

Matt.

 

[Go Rebels!]

In iron infested sites moisture creates more of a problem than a benefit because the iron halo seems stronger and masking is made worse.

In relatively clean sites free of iron moisture seems to be a benefit for coin hunting.

This is in my SC red clay.