T2 -3 tone setting

[Charlives]

Hello Friends, The T2 manual states that in 3 tones mode iron produces a low tone, aluminum etc produce a medium tone, and most coins have a high pitch. Then it goes on to say that most users of this mode set the disc at about 50. Why would one need the 3rd low/iron tone if we have disc-ed iron out? Thanks.

 

[Elton]

Many users ........Like to know the iron sounds in the area their hunting. Myself included.. A lot of good coins are masked by iron ..The T2 can, and will hit the good high tone targets as you pass over and through the iron patch.......

 

[chuck ky]

i only use 3 tones when hunting tot lots. it gives a high tone on nickles and a medium on zincs. if i'm finding a lot of coins i will pass on some of the zincs.

 

[Ronk]

n/t

 

[396nova]

Some one is leaving those zinc`s, that`s all I find, and half of them are so corroded the bank won`t take them.

 

[Pops]

I prefer the 3 tones even with iron disc out as all coins except zincs give a high tone. As Monte pointed out the high tones can come through even with iron present. I have found numerous wheats and indians that sound in the zinc ranfe so I dig all the zinc signals. Most of the time they are zincs but I get surprised every one in awhile.

 

[Charlives]

Thanks for the replies. So if i understand, you guys use the three tones when discing out iron because you like the 2 tones that are left (because the 3rd tone is iron and is almost never heard when disced out)?
Elton,I like to hear everything also, so I'd like to try the disc set at 0 because you supposedly get the boost there as well as at 50 AND you'd heard everything. Anyone trying that?

 

[Monte]

Hello Friends, The T2 manual states that in 3 tones mode iron produces a low tone, aluminum etc produce a medium tone, and most coins have a high pitch. Then it goes on to say that most users of this mode set the disc at about 50. Why would one need the 3rd low/iron tone if we have disc-ed iron out? Thanks.

Some folks just don't like to hear iron targets. I often times do. The 3-Tone ID lets them hear the mid-range and higher Tone ID responses w/o hearing the lower Iron-ID tone. I like to hear it most of the time.

Some average "Coin Hunters" don't care for zinc cents in areas where they are just too abundant or maybe eaten-up to the point they can't be circulated. Personally, I try to hunt older sites and most Indian Head and early 'Wheat-back' 1

 

[Charlives]

Thank you all. Tomorrow I'll be getting so more practice in. Good luck in all your hunts.

 

[rob]

Single tone is best for me and let the meter make the final decision.

 

[Old Virginia]

Some one is leaving those zinc`s, that`s all I find, and half of them are so corroded the bank won`t take them.

McDonald's will.

 

[Dirt Poor]

Where I've been relic hunting, there are many "patches" of iron, and that seems to also be where the relics are. The iron "farting" sounds will get on your nerves at times, but I've been hunting with too low disc. Next time out, I'll try a higher setting. The experimenting lets us know what is best. I'm still fairly new to the T2, but so far, I'm really impressed. I've hunted with all kinds of machines, and this one ranks at or near the top of any of them. I just need a few more days off to hunt.

 

[TerraDigger]

Here is the reason why many users choose 50 as the disc on a T2. My bench testing done a few months ago. The dynamics apply to both the 5" & 11" coils. Also Elton/Monte are correct. Sometimes you need to hear the iron. When a coin is closely co-located you can better discern audio wise that the coin is being partially masked. Bagged a extra-fine grade 1915s Barber dime a few months ago due to being able to hear the nail audio signal next to the dime and make the dig decision that it was a co-located junk/coin target.

Model - Teknetics T2/Software version 6.5 (from 6.0 onwards version numbers make no difference in depth according to First Texas Products)
Coin Used - U.S. Quarter - Cupronickel
Coil - 5" DD
Sensitivity - 60
Tone Selection - 4

Discrimination Levels

0 - 9" depth reading (extremely noisy due to EMI & machines internal circuitry noise)
10 - 7" depth reading (approx 50% less noise than 0 disc setting)
21 - 6 1/2" depth reading (quiet)
30 - 6" depth reading (quiet)
40 - 6" depth reading (quiet)
49 - 5 1/2" depth reading (quiet)
50 - 9" depth reading (this is where another huge increase in Gain occurs, besides the zero setting. Same noise level as 0 disc setting)
60 - 9" depth reading (approx 50% less noise than 50 disc setting)
70 - 8 1/2" depth reading (quiet)
80 - 8" depth reading (quiet)

Observation - the Gain does not seem to follow a straight linear output as disc is increased. Notice that from 0-49 disc there is a 3 1/2" range in detection depth. From 50-80 disc there is a 1" range.

0r

If you remove the disc 0-9 results from above, there is a 1 1/2" depth range between disc 10-49 and a 1" depth range between disc 50-80.

The large gain increase at 50 and the 10-49 disc range has serious implications on how a user sets the discrimination. Below are object disc ranges on T2:

OBJECT / TARGET I.D.

gum wrapper foil / 40-55 (majority of gold rings/jewelry with any detector are found within the foil range and below foil range)
U.S. Nickel / approx 58
alum pull tab / 60-75
alum screwcap / 70-80
U.S. zinc penny / approx 78
U.S. copper penny-clad U.S. dime / approx 83
U.S. clad quarter / 89
U.S. silver dollar / 94

 

[Charlives]

Thanks for the comments everyone. Thanks for your work Terradigger. Can you discribe the sound that co-located iron/keeper items make? What tone level allows this to be heard best?

 

[TerraDigger]

Sure.....its a clipped mixture of a iron tone/high tone. Not a nice long solid "grunt" (iron) or "high bong" (coin). I find that if you gather some junk targets and coins, at home, put them at various distances apart, and practice. It will greatly speed up your learning process. Unlike others, I don't believe in wasting time digging holes in the field to learn the fundementals of co-located target identification. Alot of that skill can be learned at home with practice.

 

[Charlives]

Thanks, I've taken your advice regards practicing. I think I understand what Bart means when he says to listen for a full/round sound.

It seems small nails aren't as much a problem as larger iron. A 6 inch length of 1/2 inch iron masks a dime 8 or 9 inches away!

 

[Dirt Poor]

Here is the reason why many users choose 50 as the disc on a T2. My bench testing done a few months ago. The dynamics apply to both the 5" & 11" coils. Also Elton/Monte are correct. Sometimes you need to hear the iron. When a coin is closely co-located you can better discern audio wise that the coin is being partially masked. Bagged a extra-fine grade 1915s Barber dime a few months ago due to being able to hear the nail audio signal next to the dime and make the dig decision that it was a co-located junk/coin target.

Model - Teknetics T2/Software version 6.5 (from 6.0 onwards version numbers make no difference in depth according to First Texas Products)
Coin Used - U.S. Quarter - Cupronickel
Coil - 5" DD
Sensitivity - 60
Tone Selection - 4

Discrimination Levels

0 - 9" depth reading (extremely noisy due to EMI & machines internal circuitry noise)
10 - 7" depth reading (approx 50% less noise than 0 disc setting)
21 - 6 1/2" depth reading (quiet)
30 - 6" depth reading (quiet)
40 - 6" depth reading (quiet)
49 - 5 1/2" depth reading (quiet)
50 - 9" depth reading (this is where another huge increase in Gain occurs, besides the zero setting. Same noise level as 0 disc setting)
60 - 9" depth reading (approx 50% less noise than 50 disc setting)
70 - 8 1/2" depth reading (quiet)
80 - 8" depth reading (quiet)

Observation - the Gain does not seem to follow a straight linear output as disc is increased. Notice that from 0-49 disc there is a 3 1/2" range in detection depth. From 50-80 disc there is a 1" range.

0r

If you remove the disc 0-9 results from above, there is a 1 1/2" depth range between disc 10-49 and a 1" depth range between disc 50-80.

The large gain increase at 50 and the 10-49 disc range has serious implications on how a user sets the discrimination. Below are object disc ranges on T2:

OBJECT / TARGET I.D.

gum wrapper foil / 40-55 (majority of gold rings/jewelry with any detector are found within the foil range and below foil range)
U.S. Nickel / approx 58
alum pull tab / 60-75
alum screwcap / 70-80
U.S. zinc penny / approx 78
U.S. copper penny-clad U.S. dime / approx 83
U.S. clad quarter / 89
U.S. silver dollar / 94

Thanks for this info!!