Why I Prefer Using Concentric Coils Over DD Coils:smoke:

[John-Edmonton]

Click for short video: https://www.youtube.com/watch?v=RtQKNK20UnA

Concentric coils just give me more ID characteristics and allow me to accurately guess the depth of the target using only the audio, as shown in the short clip.

 

[fongu]

Do you get more depth with the concentric coil than the DD coils, John?

 

[asiandigger]

John you're still stuck in the concentric mode. Good video though. I prefer the concentric on sand and TOT lot, other than that the DD is making me a lot money...

 

[jim tn]

Digging does the same thing, John, but D D's do slice through the trash much better. John, do you know what kind of depth that coil gets compared to the stock 11" DD? HH jim tn

 

[ajaj]

I respect all opinions, but, the DD coil will get a lot more depth in mineralized soil (i.e., soil greater than ~85 ground balance). However, the concentric coil may have some advantagesmwhen it comes to pinpointing. Personally, I do not use the concentric coil in all conditions.

aj

 

[togamac]

Thanks for the demo John! It really is food for thought.
Personally I prefer the DD because I don't have a concentric and I've been forced to learn the DD. I especially like that it's field is ax-head shaped and not cone shaped and therefore it covers more area below ground with each sweep. If you're coloring a large open area, do you use a sharp crayon tip or the side of the crayon?
As for bottle caps, I've learned, by predicting what I've found before digging, that yes they do sound like a coin but they have a scratchy edge (sort of like a bottle cap vs. a coin LOL).
As for pin-pointing with the DD, I never use the pin-point button on the AT-Pro. I've found that if I simply back off from the target and start my sweeps towards it, the target is pretty close to being under the leading edge of the coil when I first hear the signal depending on the depth of course.
That all said, I'll defer to your superior experience and keep an open mind should I have the opportunity to get me a concentric coil.
HH, Mac

 

[John-Edmonton]

The concentric almost seems to be more sensitive and get better depth on the lower conductors.