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THREE new X-TERRA coils from :coiltec:..........
- Thread starter Digger
- Start date
I'd like to thank you personally for you're past and future information and testing for the XTerra users on this forum Randy, sometimes probably not an easy task.
And for you're input with the boys at Coiltek, one in particular.
The new top range XTerra in the future will see us say goodbye what had been a grand platform in detecting history, the 15000 to Eureka. But the upside will be the continuation of the brilliant XTerra series, with a coil choice second to none.
And for you're input with the boys at Coiltek, one in particular.
The new top range XTerra in the future will see us say goodbye what had been a grand platform in detecting history, the 15000 to Eureka. But the upside will be the continuation of the brilliant XTerra series, with a coil choice second to none.
Thanks. I appreciate your comments.
Speaking of the grand platform in detecting history.....that mirrors my sentiments for the 5kHz Sterling, Tribune and most recently... the Advantage. Six or seven years ago, I asked Minelab to make an Advantage with notch discrimination, audio tones and visual TID. As you know, that never happened. But in their defense, I have to say the X-TERRA is about as close as you could get. HH Randy
Speaking of the grand platform in detecting history.....that mirrors my sentiments for the 5kHz Sterling, Tribune and most recently... the Advantage. Six or seven years ago, I asked Minelab to make an Advantage with notch discrimination, audio tones and visual TID. As you know, that never happened. But in their defense, I have to say the X-TERRA is about as close as you could get. HH Randy
Randy:
You mention in your article about your low to moderate mineralization what numbers do you GB at?
I would like to use the 15" 3KHZ. coil I usually GB in the 12 to 24 range,I have two 7.5 KHZ coils now and don't really want another 7.5KHZ coil.
Would I have to lower the sensitivity to much to get it run smooth enough defeating the depth capabilty of the 15 " coil?
I like to run in all metal with the threshold set around 6-7. with sensitivty around 24-26 the 10.5" 7.5KHZ. runs good and smooth at these settings!
I can locate good targets up to about 8" sometimes more with these settings.
I am located in west central Illinois ware my GB numbers vary quite a bit from site to site and I have acess to some big fields thats why I want a big coil.
Thanks and keep up the good work !
You mention in your article about your low to moderate mineralization what numbers do you GB at?
I would like to use the 15" 3KHZ. coil I usually GB in the 12 to 24 range,I have two 7.5 KHZ coils now and don't really want another 7.5KHZ coil.
Would I have to lower the sensitivity to much to get it run smooth enough defeating the depth capabilty of the 15 " coil?
I like to run in all metal with the threshold set around 6-7. with sensitivty around 24-26 the 10.5" 7.5KHZ. runs good and smooth at these settings!
I can locate good targets up to about 8" sometimes more with these settings.
I am located in west central Illinois ware my GB numbers vary quite a bit from site to site and I have acess to some big fields thats why I want a big coil.
Thanks and keep up the good work !
Randy is taking a much needed and deserved break this weekend, so it is likely that he won't answer before Sunday night or Monday.
To try to answer your question, I refer to the article where he said,"Regardless of our soil mineralization levels, the large diameter allows us to greatly increase the amount of ground we can detect in a given period of time, while providing a depth of detection not achieved with smaller diameter coils."
I've also seen some of his test data, and he was actually able to run a notch higher sensitivity with the 15" LF than with the 15" HF while maintaining stable operation.
In another part of his report he wrote,"For the purpose of this Field Test and product analysis, I took these new coils to old homesteads, parks and open fields that I
To try to answer your question, I refer to the article where he said,"Regardless of our soil mineralization levels, the large diameter allows us to greatly increase the amount of ground we can detect in a given period of time, while providing a depth of detection not achieved with smaller diameter coils."
I've also seen some of his test data, and he was actually able to run a notch higher sensitivity with the 15" LF than with the 15" HF while maintaining stable operation.
In another part of his report he wrote,"For the purpose of this Field Test and product analysis, I took these new coils to old homesteads, parks and open fields that I
Thanks long hair:
I've been debateing the idea of a 3KHZ coil till this came up due to the GB numbers I get,I know this coil will not be cheap to purchase but to me it's about the hunt
and the copper and silver are my main objectives to find.There is a couple very large fields I hunt ware I have pulled alot of copper and brass and a few silvers from.
Just makes me wonder how much was out of reach of the 10.5 inch coil.
I'm really considering one of the new 15" 3KHZ coils.
Also happy to see Minelab is answering the call to a wider coil selection for the X-terra series of detectors.
HH and thanks again.
I've been debateing the idea of a 3KHZ coil till this came up due to the GB numbers I get,I know this coil will not be cheap to purchase but to me it's about the hunt
and the copper and silver are my main objectives to find.There is a couple very large fields I hunt ware I have pulled alot of copper and brass and a few silvers from.
Just makes me wonder how much was out of reach of the 10.5 inch coil.
I'm really considering one of the new 15" 3KHZ coils.
Also happy to see Minelab is answering the call to a wider coil selection for the X-terra series of detectors.
HH and thanks again.
Another quote from what Randy wrote:
"I will also add that, although I had hunted these areas many times in the past, I had no idea there were that many targets
"I will also add that, although I had hunted these areas many times in the past, I had no idea there were that many targets
littlenugget
New member
I have one question , before this three new coils came out i was about to buy 7.5khz 15 inch coil from coiltek the old version , then i saw diggers air tests on this three new coils , doesnt it supposed to be a lot deeper the 7.5 khz than the 18.75 khz , i saw that the 18.75 khz was 2 or 3 iches deeprer than the 7.5 khz.
another question.....what is the smallest target that the 3khz detect? can it detect a penny, can it detect a 1 ounze gold nugget?
thanks
another question.....what is the smallest target that the 3khz detect? can it detect a penny, can it detect a 1 ounze gold nugget?
thanks
littlenugget said:
The "deeper" depth of detection you are talking about 'littlenugget, only refers to air-testing.
You would expect one of Coiltek's sensitive 15" coils in 18.75khz to hit a few targets a few inches longer in an air test, in comparison to the mid and low frequency coils, depending on the metal make-up of the target, and size and shape.
In the ground on un-dug targets you would see some of the tests reversed in favour of another frequency
Don't be fooled by the low 3khz, It's different on the XTerra's and more sensitive than people would think, especially coming out of a Coiltek coil. And the 15" will let the 3khz out to play.
The smallest target? You'll have to hit that yourself. As for a penny..... It'd eat my penny's for breakfast. You ever held a one ounce nugget? They are quite sizeable, so that only depends on just how heavy the mineralized ground is that it'd be laying in.
To add to what Argyle said, all three coils will hit on targets within their depth range. The difference will mostly be the TID accuracy and the response to the targets.littlenugget said:
It's interesting that you asked about a penny and a gold nugget, because they are almost at opposite ends of the conductive spectrum. The TID bin segment widths are wider at the high end of the scale with the LF coil, making it more accurate at ID'ing high conductors like copper and silver, while the bins are wider at the lower end of the scale with the HF coil, making it more accurate on low conductors like gold and lead. The MF coil ihas the most uniform bin widths, allowing it to be the most honest accross the entire span.
The real boon of the LF coil will be that the lower frequency will penetrate the ground better under most circumstances, and along with it's response to high conductors, the combination will result in a deep seeking coin and relic monster that I for one am eager to add to the arsenal.
The new 6" "Digger" is exciting too. The separation of a 6" DD, coupled with the added depth and accuracy on coins will allow us to finally compete with or beat many with FBS machines in high trash public parks and abandoned homesites. Owning a soon to be discontinued Explorer SE, I can't wait to give the "Digger" a whirl!
rseasy1 said:
The 3 kHz 15-inch coil that I used in testing always selected a ground phase number much lower than any other coil I've used around here. It was not uncommon to auto gb with a single digit. I've got another one "on the way" to do some comparitive analysis, so I'll let you know how it matches up when it arrives. If the sites you are hunting are not heavily "trashed" with iron, and you don't want another 7.5 kHz coil, at this point in time I would suggest the HF version. But if you can "hold off" until I get the new 3 kHz, I'll be able to give more definitive answers. HH Randy
Digger said:
Thanks for the heads up Randy I'll wait for the test results I really want a copper and silver monster coil ,The 18.75 coil would be great if I was a gold hunter but for my location
gold would be a fluke to find and only in the form of jewlery or coins.If you had success with single digit GB numbers with the 3KHZ. then it should'nt be a problem for me once I learn and get used to it.
I'm really excited about this new coil and do believe it will live up to our expections!
I'm not concern about going to the local parks and finding clad coins I'm a silver and copper hunter and this is what I'v been waiting for.
Like you I hunt large farm fields and most my finds are in the 3" to 6" range in depth I want to get deeper.
Will your next testing session include some info on descrimation and seperation abilitys of the 3 KHZ. coil?
Please forgive me for asking things all the time but this is the only place I feel thier is real answers and correct ones on the x-terra series detectors.
silvereagle
Member
I have a xterra 50 the 3khz coiltek coil wont work? why
I'm afraid that you are correct, in that 3kHz coils won't work on the XT-50. No 3kHz coils will, not just Coiltek's.silvereagle said:
As to why it won't work? You'd have to ask the engineers at MineLab, since it is they that designed it so.
The new series XT-505 can use all three frequencies, but the XT-305 still can't run 3kHz.
sarge1stone
New member
Looking for Coiltek dealers on their website is not any good for the U.S. because all I find are no links or broken links. The dealers that sell Coiltek list them for everything but the X-Terra series, and I don't want to end up having it back ordered. Where I live there are not any Coiltek dealers around to buy one.
I'd wonder if the dealers don't have them listed yet is because they don't go on sale until October 29th? The last time I looked at Coiltek's website for US dealers, I found 8 or 9 pages of them. And from what I remember, several of them were sponsors of this forum. Hopefully one of them reads this message and lets us know when they have ready to deliver. HH Randy
I asked Bart about prices, and he said not yet...but soon. 
sarge1stone
New member
I was looking to get the 7.5 mid frequency 15" but wondering how sturdy & how much lighter the first design is over the spider type second design.