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Xterra 70 and 3 Khz coil

W

Wirechief

New member
Hi everyone, I don't post much on the forums here but I am wondering if anyone at all is using the 3 Khz coil in earnest ? I just installed one on my X70 and will be trying it out for awhile. Of course it is a little heavier. Hoping to go back over previously worked areas that I used the 7.5 Khz coil on. Ok God Bless all and take care.

John Tomlinson, CET:minelab:
 
John,

I have done OK with the 3 Khz coil on coins. There is a trade off in that I dig more iron foolers but the increased response on some of the iffier targets is worth it to me.

Tom
 
I was using the 3kHz coil for coins but I felt that I wasn't getting good depth on War Nickles. I may have just imagined this but I went back to the 7.5kHz coil. Have either of you felt that War Nickles was just trash with the 3kHz coil?
 
But on a test nickel I have buried near iron the stock coil does do better. In fact the stock coil hits it better than the ID Edge and the V & C with stock or 5.75 coils. Its the smaller mid to low conductors I have problems with. Maybe I should send my 70 in to be checked out??

Tom
 
I was after the deeper, older silver coins, mainly, as I was attempting to try and compete with my Explorer II swinging friends, Chris & Tom.

There are several older parks that I sort of "rely on" to bang out some older silver if I put in he time. Two of them are old resort/amusement sites that later became parks. My oldest US silver so far from them is an 1884 Seated Liberty dime, but I've pulled enough Barber's and early Merc. and other silver to have a good 'feel' for them.

With all three 9" coils in hand (or two in hand and one mounted) I was able use my marker tees and work these sites to compare the performance. I was really hoping for great things from the 3 kHz coil on the higher-conductive coins.

I used the X-Terra 70 w/3 coils; a Troy Shadow X5 w/5x10DD coil (I don't have the stock 9" and wouldn't use it anyway) to compare a higher-frequency performance; a White's Matrix M6 w/stock 950 coil to compare a mid-way operating frequency; White's XL Pro w/stock 950 for something close to the standard X-Terra operating frequency, as well as my Classic III & IDX Pro to compare a close to standard frequency as well as a unit with slow-motion performance. For this comparison I used both the 6
 
Hi Tom and Monte, thanks for your input on this question. It looks to be that the 3 Khz coil is just fair the way I take it. I have been working the 3 Khz coil for about 3 days now and I feel that my detection depth has definitely increased over the 7.5 Khz coil. But I am finding I have to really analyze the readout and tones before I dig. But if I take my time I find that I can work the coil and determine if it maybe worth digging or not. Thanks everybody for the info and I hope all is well with you Tom. God Bless and many thanks to all.

John Tomlinson, CET
 
That is why when I start detecting season again next Spring, I will NOT be using an xTERRA 70 BUT A 5O instead. I found the lower frequency coil all but useless and would rather spend my money on both larger and smaller 7.5 freq. coils (especially smaller), and I won't get it until the small coil is available. Hopefully by next Spring it WILL be. HH George Fatizzi
 
You say next year that you will be hunting with a 50 instead of a 70, do you own a 70 now? If so, do you think that the extra hardware or software that allows the X70 to use one more freq. of coil, effects it's depth and other factors? Are they not both vflex tech? I am in no way putting you down, I am just trying to understand why you said what you did! I have a X70, and have not had the time to put at least 100 hours behind it, so i rely on you folks for the short cuts!! No better way to learn your machine than putting the hours on it, but if a person can gain just a little off of these forums, it does help! I have a big relic hunt coming up, and i hope to get at least 50 hours hunting behind me with it before I go, but it isn't looking good!
H.H. To All
Greg
 
"You say next year that you will be hunting with a 50 instead of a 70, do you own a 70 now?"... He would have had to have/have-had an X-Terra 70 to try the 3 kHz frequency coil, and he reached a similar conclusion to mine for his hunting needs. I don't think he has either because if he still had the X-T 70 he might keep it, but I even doubt that.

"If so, do you think that the extra hardware or software that allows the X70 to use one more freq. of coil, effects it's depth and other factors? Are they not both vflex tech?"... Yes, they are both the V-Flex technology, and while I personally prefer the X-Terra 70 over the X-Terra 50, it is due to more manual control of a few functions, not depth of detection. I had them both and worked them side-by-side. Same frequency, same sites, same located targets. For the most part, no real depth difference when both were tuned similar.

"I am in no way putting you down, I am just trying to understand why you said what you did!"... If George doesn't need or want the versatility to use the lower frequency, he doesn't need the X-T 70. If he prefers the 4-Tone audio for his hunting, then he doesn't need the other Tone options of the X-T 70. If he hasn't got the use for the Prospecting mode, then he doesn't need the X-T 70.

If he mainly wants to have some gutsy performance, and the manual GB of the X-T 50 is adequate for his needs, then all he really needs is the X-Terra 50. However, he's not all that interested in any X-Terra model until they produce a decent, functional smaller 7.5 kHz coil, so if they do by springs, he'll consider a 2-coil X-Terra 50 set-up.

"I have a X70, and have not had the time to put at least 100 hours behind it, so i rely on you folks for the short cuts!! No better way to learn your machine than putting the hours on it, but if a person can gain just a little off of these forums, it does help! I have a big relic hunt coming up, and i hope to get at least 50 hours hunting behind me with it before I go, but it isn't looking good!"... I hope you can get out and put in the time. Earlier this year I was able to often get in 6-10 hours a deal, especially during a couple of weekish ghost town jaunts. Put in the time. Read the forums. Ask the questions.

Enjoy your X-Terra 70!

Monte
 
I now totaly understand where his comment came from, and I do thank you and the rest of the folks on here for helping me! I like my 70 and I plan on using it as my main machine, but I was also thinking on getting a 50 as a backup, I think Minelab has built a nicely price all around dectector, and I am hoping that they will come out with a small coil for it! As I have stated before, I wished i lived close to someone that has the hours behind the X70, so that I could hunt with them and pick up some of the tricks.
Monte, I plan on using the setup that Donnie from the Treasure Spot used on DIV V, have you read his report? And if so, what would be your comments on it? I will greatful for the advice.
Thanks Greg
H.H. To All
 
I was just trying to understand, and most likely as always I didn't read your post good enough1 I hope that I have not offended you.
H.H. To All
Greg
 
Wow never knew my question about the 3 Khz coil would draw so much attention. I'm glad I posted on this subject. I will continue to use the coil myself and for my ground conditions it seems to work pretty well. I guess I just have a lot of patience. God Bless all and thanks for the input.

John Tomlinson, CET
Wirechief
 
I was just trying to say that, for my style of coinshooting, I really don't need the extra features of the X70 or the lower freq. coil. I found the middle freq. coil (7.5K) to be the best all around for coinshooting. So it would be a waste for someone like myself to shell out the extra $200.00 or so on the X70 when that money could better be spent on a smaller concentric for shooting the trash with. I LOVED the X50 the first time I took it to one of my hunted out sites and even preferred it over the X70 I had for a short time. I can't wait for Minelab to finally get that hocky puck out! C'MON MINELAB! I'm anxious to see what the Xterra's can REALLY do with that coil in the trash! HH George
 
I am just glad there are folks on here that like to share there advice on these great detectors, I plan on buying a X50 for a backup as soon as I get some other stuff of mine sold.Unless the wife kills me first!!!
H.H. To All
Greg
 
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