the 10" DD Coils

[widebody]

[size=large]looking for answers from those who have used both the 10
'' DD coils on minelabs and mxts. the minelab will be fbs tech with 28 freqs.and the mxt coils, i quess, would be used even on the V3 three freq. machines?
does the mxt coil give off a stronger signal? does it go as deep? and is it easier to pin-point with?[/size]

 

[JohninNC]

Hello,
I can give you half the answer. I have the MXT and the 10"DD. I use it a lot these days, even used it today. It is very deep. When I relic hunt or hunt at the beach, I run with the gain wide open. I have found targets 12 to 15 inches deep, but most stuff is not that deep. Once in a while on the relic field or at the beach you get a really deep target. I found a buckle last year that was on it's edge and it was 10 inches to the edge. The signal sounded like it was on top of the ground. I later air tested the buckle and with 10"DD coil it signaled very loud to 18" and a faint signal with a good VDI to 22". Hope this helps.
John

 

[widebody]

[size=large]thanks john. what i'm looking for is the science behind the coils. my thinking is the fbs coils in order to have 28 freqs. must make due with less windings thus weaker signals. last sept. i got to use a mxt pro and when it got a signal the whole machine vibrated. not so with this down under job. for now it's kicking my butt. i trained on my xlt so i do have some idea of what this other machine should do.just seems that it works okay on some days and quirky on others.
the weatherman says i get to try again for the next two days anyway.

HH[/size]

 

[Joel-Winnipeg]

I have the 9.5 coil ( came with the MXT ) and decided to buy the 10 DD and use that. V rated
I used it for about 5 hours and was not impressed with it.
I reverted back to the 9.5 and its the one I'll use.
Will try the DD again and see if I can salvage something out of it . There was no marked depth
and it pinpointed off center to the lower left.
Try as hard as I could could not get it to pinpoint in the correct location.

 

[Larry (IL)]

Unless you have very mineralized ground, the 950 conical is often the better coil. Pinpointing with the DD or SEF should right in the middle though. You can also push or drag the DD's to pinpoint on the toe or heal of the coil with some practice.

 

[Monte]

picking between what a manufacturer says about their detector models.

[size=large]looking for answers from those who have used both the 10'' DD coils on minelabs and mxts. [/size]

I can tell right off the bad that a flurry of answers might not fit your needs simply due to the differences in overall performance between these two detector types, regardless of similar coil design.

[size=large]the minelab will be fbs tech with 28 freqs.and the mxt coils, i quess, would be used even on the V3 three freq. machines?[/size]

Yes, the White's 10" DD can be used on the MXT or V3i, but we'll avoid a discussion on the so-called "28 frequencies' the FBS models are supposed to work at. Even if you compared a single-frequency Minelab w/DD to a White's single frequency w/DD, there will be differences in how the signals are processed in different functions and how their pinpointing might be interpreted.

[size=large]does the mxt coil give off a stronger signal? does it go as deep? and is it easier to pin-point with?[/size]

In a way these can be 'tricky' questions. It's not a matter of wondering if the MXT coil giving off a stronger signal, because all detectors generate an electromagnetic field about the coil that simply spreads outward from the coil. A differences is how the detectors circuitry is designed to handle it with the receiver circuitry. As an example, there was a school demolished here a couple of years ago and the sports field turned up to build a new ball park. I used the Explorer SE Pro I had at the time, w/11" DD coil, to work along the sideline area parallel to the fence, the chain link fence was on my right side and as I swept the search coil to the right, I couldn't get closer than maybe 4 feet when I started to get a steady audio response.

I reworked this very same area with my V3 w/950 and 10" DD, XL Pro w/950 concentric, XLT w/950 concentric, IDX Pro w/8" concentric, and M6 and MXT with 12", 950 concentric and 10" DD coils and could work the same path (direction) and move the search coil to within 2 feet of the fence before I started to get a response. If you only looked at that performance between the Minelab and then the White's models, you might think the Minelab coil gave off the greater signal because I had to be twice as far away as the White's models before the fence caused a response. That thinking would maybe make a person think that the Explorer SE w/11" DD coil could get twice the depth of all those White's models using a 950 concentric or 10" DD coil if actually searching for coins and other lost targets, but it would be wrong.

Using ALL those models and generally searching, day after day after day thanks to the kindness and welcome of the contractor, I paced off the areas between the bases, gridded off the infield area and is was groomed, worked the coils parallel to the fence and felt I did a good job of cleaning the area out of good and bad targets. To be fair, let me remind readers that I usually prefer a smaller-than-stock coil and I did use the 6