6"- 9" or 12" loop, and a dime at 6" Different signals?

[mrgarlic]

I have a MXT PRO along with the 6, 9, and 12" coils. Lets say there is a dime at 4' to 6" buried in soil , With everything else being average, What difference would I see or hear with each coil? Centering for example. If I draw the three coil cone shapes out on paper, It would appear that the bigger the coil and the smaller the target, centering would be an issue? Do you agree??? and would there any other changes? Also....I have access to a park that was an old homestead. There is a lot of surface trash and not many coins. Would I use the 12" and set discrimination high to go deep for the silver? Or?? Thanks,,,, mrgarlic

 

[BarberBill]

I have the original MXT and I wouldn't expect to see much difference on a dime at 4 -6" with those coils. The pinpointing tends to be a bit more "iffy" with the larger coils in my experience, but not a problem if you use a pinpointer (coin sized targets). Drop the dime to 6 to 10 inches and you should get a stronger signal with the larger coils IMHO. As to the "lot of surface trash" I'd leave the 9.5 or 12" home and use either the 6" or the 4X6 shooter, as much gain as possible without excessive chatter and discrimination at or below the first preset and swing SLOWLY. I've pulled many good targets at a local, very trashy park using the smaller coils in areas where it is nearly impossible to use the larger coils due to the number of targets being read at any given moment. Hope this is helpful.
BB

 

[TabWhisperer]

In the site you describe I would use the 6x10 or smaller if you have one. The bigger coil will physically be passing over more targets (surface trash) and the machine will be processing all that stuff. A smaller coil will lighten the workload on the detector. I found the 6x10 is more sensitive on the back half. That is something to keep in mind on the overlaps. My little 4x6 is outstanding is hitting good stuff between junk, but then you give up the amount of area you can cover. To me the coils are like drill bits. It takes the right one given the conditions you are working in.

 

[gmanlight]

In heavy trash i would leave the 12in coil home and save it for low trash open fields.
The 9in coil is a standard size for a lot of machines for a reason , its good all around.
Depending on the size of the site and how hard its been hit i would start with that
if you come up empty try to squeeze out goody with the small coil.
A large coil in trash can loose a shallow dime masked by junk the small coil can see.

 

[Monte]

Let me start off by stating there is no 'perfect' detector, nor is there a 'perfect' search coil. That said, I sill state that there are many top-quality detectors on the market today, of which the MXT Pro is one, and of all the search coils offered from any manufacturer, I strongly support a smaller-than-stock coil in most cases for general use.

I have a MXT PRO along with the 6, 9, and 12" coils.

One of the better detectors in production today, in my opinion. For general hunting tasks covering a variety of applications, I have to give the nod to models such as the MXT Pro, MXT, and M6 from White's and the Omega and Gamma from Teknetics and F5 from Fisher, just to narrow the field down. As for the search coils, I seldom like a coil larger than about 8" for general detecting, and that includes the 950. I wish White's would not have gone to that coil and would have held out with their 8" coils. The only exception in standard-coil size that I like is the 10" elliptical concentric on the Omega. It's 9