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mxt noise?

Steeler

New member
Can someone give this newb some advice please.

I am a new MXT user. I find the chatter, chirps, clicks, etc distracting. I can not find anything other than shallow targets. I lower the sens. and tried a multiple of settings, but still have trouble finding deep(er) targets. I am using the stock 950 coil, at not a very trash site.

Are there any tips to finding deeper targets and telling them from the normal chatter? Would a DD coil be a good investment to maybe tame this puppy down some?

Any advice is really appreciated.
 
Steeler, first off, check to see that your toggle switch is in the GROUND setting. If it is in the LOCK setting, you may be WAY out of ground balance, which MIGHT give spurious signals. If that is ok, then, to see just how trashy your site is, use the PROSPECTING mode, and scan the area. IF there are lots of signals, closely spaced, then your site is trashier then you realize. One MXT user, who had teh same complaint as you, switched to the prospecting mode, and found his yard was full of bits of aluminum wire. Try these suggestions, and let us know if things improve. HH jim
 
Hey Steeler, The DD coils will help some but, the MXT is a noisy machine. You should be finding deep target though. Are you sure there are any deep targets where you are?? I would air test it too. If you don't get pretty deep with the air test. Could be a problem with the machine. Mine will air test at about 12 to 13 inches on a quarter with the 1400 DD coil in coin mode and about 14 to 15 inches in relic mode. Of course you are not going to get near as deep in the ground but, this will give you a little something to go by. I would also suggest trying to hunt with it in the relic mode. It will go a little deeper and is much more stable. But, you will not get coin ID's. I have the MXT and have the 4.5 X 7 Excelerator, 6 X 10 White's and 1400 DD. They are quieter than the stock coil but, still chattery. I do run my sensitivity at least at 10 most of the time and usually about +1 in coin mode. Even higher in relic mode. I have found after a while you get used to the chatter and you can easily tell the chatter from a target signal. Just takes some time. I would try these things and don't get discouraged. The MXT is one of the best and deepest machines I have ever had. Once you get used to it.
 
Mike,

Thanks for the reply. My air tests are as follows.

Air tested a .25 in c/j mode with max gain. It will have a very, very faint disruption in the threshold at about 9 inches. So faint in fact, I'd never even notice it. And it never lets me use max gain anyway.

When I reduce the gain to preset level, I get the same barely noticable disruption at about 6 inches, again so faint I'd never notice it.

Since most fo the time I must lower the gain to about 7-8 for the machine to run smooth, no wonder I cant find anything deep. It air tests at 5 inches with gain at 7.

What gives?
 
If you are in ground tracking mode and it does this. I would say either machine trouble or coil problems. If you know anybody around you that has another coil. I would try a different coil. If the interference is that bad. Probably a bad coil. Another thing, MXT's are very susceptible to electrical interference. You should do your air test outside. If you do it inside with all you electrical devices and house wiring. You will not be able to turn your sensitivity up very high indoors either because of this. It will be very noisy inside. It could have a very big effect on the outcome of the test. Conclusion: If you have the machine in ground tracking, do your air test outside and still get the same results. Try another coil. If that don't change things. Send it in to have it checked out.
 
What reading do you get for the ground conditions where you are at in prospecting mode. The only time I don't run the MXT at +3 is if it won't ground balance and that would be in high mineralized ground. I didn't see where you said if you were having trouble ground balancing. LOWERING THE GAIN WILL LOWER YOUR DEPTH. I seldom run in C/J mode. I run in relic mode to avoid the constant chirping of C/J mode. As far as I know relic is deeper. I usually run +2 to +3, Disc 1.9, and threshold just audible. Sometimes it will run quieter if after ground balancing you switch to the lock position and G/B every so often if the machine acts up. I use an excelerator 5" and 8" as well as the stock 9.5.

I don't find deep targets when there are no deep targets. Shallow targets and trash will also mask deeper targets if they are there. In trashy areas it's tough to see good targets when there are two or three targets under the coil at the same time. A small coil solves this problem. I've found a dime at 7" and a nickel at 8". I've found 3000 coins this year for a little over $225.00. I've only found 5 silver coins. Why, because where I'm hunting there aren't many. Again where you are hunting there might not be deep coins. Rob
 
First off, as Rudy mentions below, is that you need to have the ground balance toggle in the LOCK position to properly do air tests. BUT... your air tests are REALLY poor. With the gain maxed out, you should air test on dimes to 12", and quarters to 14 or 15 inches. So, you DO have a problem. NOW, everybody is gonna laugh at me for saying this, but another MXT user had the very same problem. NO depth to speak of. He CLAIMED that he found the cure; one of the batteries in his battery pack was in backwards. When he put it right, the depth was fine. SO HE CLAIMS. MIND YOU, Little Jimmy ain't saying thatsuch a thing is even possible, 'cause I am NOT about to see if such a thing is true by reversing some batteries in my MXT, but Steeler, you might at least check the battery polarity. Otherwise, as has been suggested, swap out the coil. That is most likely the problem. Hope you find a simple cure, but at the present juncture, your MXT needs help. Hope this helps; HH Jim
 
Well I did not have it locked when I was testing. I hope that was the problem. Not sure how much of a diff that would make, but I am optimistic.

I will clean some ground, and bury some coins tomm after work. I'll post my results. I will try a variable of settings.

I think a new coil is in desperate need reguardless. This stock coil is too noisy, and dont seem to good for trashy areas.

Can you recommend a quiet(er) coil, that is decent in trashy areas? Or a good all around coil.

5.3 eclipse?
 
I thought it may be of help to other MXT users, so here it is.
_____________

Steeler,

One very good reason for not air testing an MXT inside the house is its sensitivity and operating frequency.
 
Hi Jim and all:

Regarding this comment "With the gain maxed out, you should air test on dimes to 12", and quarters to 14 or 15 inches."

Now I read Rudy's comments about proper air testing from the manual and with my 6x10 DD w/gain + 3, I'm only getting about 9" on both fifty cents and a quarter and that's only just hardly hearing it and I'd maybe pass it over. A good hit sounds off about 6 inches. Nothing even close to 14 or 15 inches.

Does everybody agree with Jim's air test ranges and I really do have something wrong with my coil?

Everybody has said nice things about the 6x10 DD, but I find it noisy and hard to pinpoint with. I much prefer my 4x6 DD which I haven't air tested yet, but it works very well. The stock 9.5 doesn't work well in my 80+ soil. I'll air test both when I have some time.

Please let me know on Jim's air test ranges? Is everyone getting the same readings?

Thx in advance.
 
Thanks all for the advice.

I went back outside, gb my machine in a clean area, and locked it. Then I began my air tests again.

c/j mode tested a .25 with max gain. Stock coil.

With almost the exact same results I had before. At 7 inches I barely get a disruption in the threshold. 6 inches is a decent signal, but come on. 6 inches with max gain? No wonder I could never find anything deeper than 2-3 inches.

Funny. My prizm IV air tests the same as my MXT.
 
Steeler, your subsequent tests verify something is really wrong. You are only getting about half the air test distance that you should get. As mentioned earlier, "easiest" quick test would to be swap coils. If that cures the problem, well and good; send the coil back. But if replacing the coil gives the same results, I'd contact White's re: sending you machine in for servicing/repairs. HH Jim
 
Jim,


Thats exactly what I was going to do. However a few interesting developments since my last few posts.

I went back to a few favorite hunting areas, and burried a few coins deep to see what/if it would pick them up. Well it did. I had no trouble picking up coins at 7-8 inches with the gain above preset. Anything below preset and it just don't get good depth at all. Where the soil conditions allow, I run in the + area and am strarting to easily pick out deeper targets.

I am still confused as to why my MXT works better at at picking up ground targets vs. air tests, but I'd rather it be this way than the other way around. I am in the process of ordering the 4x6 DD for trashy areas, but in the meantime I am enjoying my MXT alot when I can raise the gain.

Thanks for all the replies and suggestions.
 
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