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Has anyone conducted this coil comparison?

I did read the FAQFAQ on these two coils, but it wasn't clear if the 5X10 has close to the same depth as the 6". If it does, it would make a better coil for relic hunting. Can a relic hunter or even coin shooter help me with this as the FAQFAQ seemed to be written from the perspective of a gold hunter?
 
Based on comparisons in my soils, I'd say same frequency and same width = similar depth. The depth capability of the little 6 inch DD coil has surprised most who have used it. The major difference between it and the elliptical is in the amount of soil you can cover with each swath. More coverage equates to a better chance of something being "under the coil" at any one time with the elliptical, simply due to the "length" of the footprint. As a coin shooter, for target separation, I'd opt for the small 6-inch DD at 18.75 kHz. The smaller the footprint, the less chance of target masking. And like I said, I don't find a lot of difference in depth potential. Which one you choose will depend on whether you want more ground coverage or better target separation. JMHO HH Randy
 
Yes, I can add some firsthand info on this subject as I use both coils.

First, I will say that the 6inch DD is/was my most fav coil to use on the X70 for seperation and very good depth even at modest sens settings.

Most of the places I detect are sooo trashed I usually run a sens of 15 and still dig deep targets.

Using the sens setting of 15 and covering an area of about 10x10ft I cross hatched the area using the 6 inch DD coil. I found plenty of good items amongst the trash. I dug EVERYTHING out of this area that I heard including iron.

I then switched to the 5x10 with the same settings, including sens and auto track and proceeeded to dig MORE coins from even deeper.


my experience is this

The small coil is REAL responsive to small metal and foil like objects, the 5x10 is not as sensitive imo to the small stuff.

To my surprise, it seems to me that that 5x10 has better seperation that the 6in DD.

The 5x10 is deeper in my area using all the same settings.

These two coils along with the mf DD coil are also almost immune to iron trying to ID as a high reading VDI. The stock coil is the one that will drive someone crazy by IDing iron items as desirable targets.


Hope these tidbits help you some

Tony
 
Tony, that is actually a big help. I never gave the 5X10 coil a chance when I got it as standard with my 70 and traded it without trying it. I realize now that I need to get it back as I have an application for it.
 
In My Opinion
In My Soil and Area

The 6" DD has better seperation for the heavy trash based on the LENGTH of the foot print.
I have found the 5 X 10 DD to be about an inch deeper on a silver dollars in a glass jar with metal lid.

I will try to find the numbers.

I like both of those DD coils and that 5 x 10 does run good and almost as good on seperation as the 6" DD

HH
Jeff
 
I just ordered the 10" mf D-D from Richard. For mostly field and pasture CW relic hunting, I hope I made a good choice. Used coil for only 80.00, and he stands behind his products. I can't wait to get it and try it. Shouldn't this be better than the stock round 9" coil?
 
The 10" MF DD is a great coil-deep with good separation. Don't let anyone kid you though. It's heavy.
 
I appreciate your info, however, that wasn't the coil I was asking about. I have a 10.5" MF DD and enjoy using it. Its only feels a little heavy because the rest of the detector is so light. I used to swing an MXT with an SEF 10X12 and the X-terra with a 10.5" DD is a feather by comparison.
 
Oh, forgot to mention that everybody considers this coil heavy because it adds some weight to the front and will make it feel nose heavy. One trick somebody taught me was to take a Lesche in its sheath or some other similiar digger and tuck it under the armstrap to act as a counter balance. It does help. Just thought I'd mention it.
 
"an inch deeper on a silver dollars in a glass jar with metal lid"

Did you find a cache with it, or was it just a test?
 
No Cache Just Yet.

The dogs dug a hole a foot deep in the back yard. I just put it to good use and ran some depth tests. It appears that the lid is what the coil hits on and not the coins. However, the coins were mostly in slips and not contacting each other. Therefore they would not be able to act as a larger mass. That is my theory anyway. Even so, the jar was standing upright, and that means the lid would be the first and only target the the machine would read.

Now, I could have run the Sens up and picked up more depth overall but I was looking for stability as I would if I was hunting. These were measured tests. I believe if the lid was rusty I would pick up a little more depth. I believe if I had ran in Prospect I would have picked up nore depth.

OK, how I tested (these are some tests I ran a while back)
*******************************************************************
Subject glass jar with metal lid lid rings at 12 to 30 air test, zinc ?

Silver
11oz Bullion -- 7 rounds, 2 rectangle, 2 Silver Eagle
7 silver dollars-- 2 peace dollars, the rest Morgans
1 half walker
1 half 40%
1 half clad (oops)
2 quarters Washington
1 quarter slq
6 dimes-- 3 Mercs 3 rosies
1 money clip with a 1921 Morgan in it

Most coins were in flips. 3 Morgans were in stapled card board holders.

9" MF CC 12"
5x10 HF DD 11"
6" HF DD 10"
All are to the top of the jar and the jar is 6" deep.
Jar was standing upright in the hole, I was using a normal hunting sweep speed.
Settings are sens 25 tracking and auto noise cancel Thresh set at 5 results same in AM and Pattern 1 Target stabilisation on

I believe I am hitting the lid and not the silver at all Should have ran same test on jar sitting side ways in the hole to simulate a bag or something I will do another test later. I did run one coil at 10 on the thresh and it may have picked up a half inch or so but maybe not. I could pick up another inch or 2 with a very fast sweep. But I don't hunt that fast so... Give it a shot see what you get. I am going to try another test with a jar of copper pennies but not today.
************************8

HH
Jeff
 
http://www.findmall.com/read.php?55,648250,648379#msg-648379

HH
BarnacleBill
 
Thanks BB, I remember reading that post now. Makes me think my results are validated.

That 6' DD is a good coil.

HH
Jeff
 
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