Aftermarket coils for M6 and MXT

[Daniel Tn]

The stock coil is proving to be decent. But I know people like Whites machines for the many optional aftermarket coils. This has been asked before, primarily about coin hunting or relic hunting in trashy sites. I'm asking it about relic hunting in iron laden soils. Which coil for you guys has opened up your machine with the greatest potential in hot soil BUT not overly trashy? I'm talking the kind of soil that will cause bullets to read as iron or way down low into the low positive numbers...that are only 5-6 inches deep.

Would a DD coil make much of a difference there? The 6x10 maybe or the 1400 if its not too heavy (of the coils made by Whites). Or maybe one of them offered by Kellyco? Throw me up some ideas guys.

 

[Jackpine Savage]

Daniel,

It would be hard to say without knowing how the stock coil is doing in that ground. Can you run the sensitivity in the + area and still be stable? Does it GB easily with just a few pumps? DD coils can help out in the high mineralization found in gold bearing areas but that may or may not be similar to what you have there.

Tom

 

[Daniel Tn]

Jackpine,

We are at the foot of the mountains where gold has been found. I could drive 30 minutes from the house and be panning gold flakes out of the streams. I think alot of our dirt is so bad due to that.

With the stock coil it starts to get erratic a little into the + area. Its somewhat quirky but stable enough to hunt with at the edge of the + next to the 100. It's still a touch noisy when hunting with it after GBing. I've tried Auto Tracking on and hunting and I've tried GBing it in Auto then going to Lock. I get about the same result. What it does, is makes some noise and reads -95 (hot rock) readings alot. I tried GBing right over top of one of the -95 readings and it didn't do much to help it.

 

[robocoin]

Smaller DD coil for bad trashy ground, probably will lose some depth.
I have the excel 8" and 5" and 10 by 14 Whites. Our ground is only moderately mineralized. I keep the 8" on M6 unit. HH

 

[steve herschbach]

Hi,

When nugget hunting in hot ground I felt the White's 10" elliptical DD Eclipse coil gave me smoother operation that allowed for higher gain levels than the stock coil. But it is debateable as to whether I was getting any true increase in overall performance compared to the stock coil. But it is still the one I would switch to if the stock coil were acting up.

The best way to deal with mineralized ground is to simply use coils that "see" less ground volume and therefore have a smaller volume of ground signal to separate from the target signal. DD coils inherently see less ground than comparable size concentric coils but even going to a smaller concentric like the 5.3 Eclipse will help. Sometimes a smaller coil will actually get better depth than a large coil in mineralized ground, but it is usually a wash as the smaller coils do give up a bit of depth by being smaller. But target id accruacy will almost always improve dramatically.

Larger coils almost never help in mineralized ground.

One of the best thing about the MXT and now the M6 is the coil selction. I have the stock 950 coil, 6" DD Shooter, 10" DD Eclipse, 5.3 Eclipse, 14" DD Eclipse, 12" HotShot, and 18" DD Excelerator. I personally believe the stock coil is the best overall coil for me but the HotShot is also very nice, with slightly more ground coverage which helps in open ground, but hurts in trashy areas. My other favorite coil is the 6" Shooter for trashy areas and nugget detecting. The 14" DD Eclipse and 18" DD Excelerator are vastly overrated as far as depth in normal ground goes. As far as I am concerned they provide little or no extra depth under my ground conditions, but do cover more ground per swing, which is really why I own them.

I just ordered a BigFoot for my MXT to try out as the 18" Excelerator is quite heavy.

If I had to keep just oneaccessory coil other than the stock coil it would be the 6" Shooter. After that it is a tough choice but probably the 10" DD Eclipse.

Steve Herschbach

 

[Jackpine Savage]

the 6x10DD is probably your best bet. It should help smooth things out so that you can pick up the fainter responses.

Tom