Find's Treasure Forums

Welcome to Find's Treasure Forums, Guests!

You are viewing this forums as a guest which limits you to read only status.

Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.

Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.

Click here to register!



Need Support Help?

Cannot log in?, click here to have new password emailed to you

F75 with the 10" concentric coil

WV62

Well-known member
Well I got a used 10" concentric coil coming for my F75. I have been wanting try one for a long time now but just never really looked for one.

I don't think I have ever read much about anybody having any success using one. My brother MarkCZ had one that came with his F70 and I got to air test it on the F75 and the numbers were down a little for the 11" DD coil. I never actually hunted with it and he sold the 10" and ended up with a 11"DD for his F70.

So anybody have any thoughts about using the 10" concentric on the F75?

Ron in WV
 
If you a talking about the elliptical concentric I believe you just made a very smart purchase.
I have the one that came on my F70 and you couldn't take it away from me if you had a gun.

Let me tell you a little bit about my experiences.
When I got my F70 it was a little similar to my F2 but with so much more power and possible settings it was also a lot different.
For several weeks I was a total newb with this thing, had much more jumpy numbers and other behavior I was not used to but I still had fun going out there learning on every hunt.
The very first hunt I had with it in Kansas I picked up tons of coins and had a great time.
I was tired and pretty much near the end if my hunt when I decided to hit one last area in the park I was at, the outfield of an old baseball field.
Been there before, not much around here but I figured what the heck.
I was in 4H tones and I just ran around the field swinging way to fast like a hockey player on a fast break but didn't really expect much of anything.
I did come across a couple of coins, I was surprised I even got a signal as fast as I was sweeping, and then I got another high tone dime number signal that stopped me in my tracks.
Loud, clear, distinct as as a fine made bell, I stopped to examine it further and my pinpoint depth says 6".
Deeper than the other clad coins I found so I had to dig it and at least see if the depth was at least close.
It actually was exactly right on the depth call and it was not a coin but a tiny piece of bent up jewelry, a Chai pendant that was hit by a mower.
When I saw the tiny 925 I smiled...first hunt ever and silver!
To get such a great hit on something so tiny and deep with the coil moving so fast over it was I believe the first time my jaw dropped using my new tool...but not the last.
It was about on my third hunt, no more than the fourth later I was at another park near a picnic pavilion in an open area a little ways away that also had some tables...and tons of trash.
I was still plucking out some coins here and there, some trash to because everything was still a bit jumpy for me and I hadn't got the hang of narrowing that down just yet.
I was in 4H again and I ran over another signal that jumped several numbers but I heard a quick, sharp, clear high tone so I stopped to swing over it some more.
Numbers jumped from foil to mid nickel but heard a lower foil tone plus that nice high tone showed up if I moved the coil just right.
I dug a hole and saw a ring...and got excited.
This was on December 2nd 2013 and that was the year my great quest for gold.
I had found 3 gold rings by March and then set a ridiculous goal to find 12 that year in the dirt...one for each month.
Never thought I would do it, 6 was my average year total, but by December I had 11 and was desperate to find one more before the bad weather rolled in which was forecasted in just a few days.
This thing was one of the only gold rings I ever dug that was a dead on nickel signal out of the ground but in the ground it was jumpy because there was at least one if not two pieces of trash close by...and I mean within an inch or two.
I was thrilled!
No marks but it was huge and I know that resizing is one thing that can wipe out marks on rings so I stopped at a jewelry store to have it tested.
The very young girl took it in the back to test it for me and came back and said it was a combination white and yellow gold that tested 14k.
Then she offered me a lowball $85 to buy it from me and I said no thanks.
After posting a pic on another forum another member told me he located a ring exactly like this one for a friend that lost it, same white and yellow configuration, same odd shape which was not round but flattened in the rear, and this one was not 14k but platinum and 18k.
I still haven't got a test kit but I still have that ring and one day I think I am going to keep it for myself once I find out for sure.
It is way to nice for melt and I don't think I want to sell it even if I could get several hundreds for the thing.
It fits my fat fingers pretty good, also.

https://m.youtube.com/watch?v=FA3QNhLvvXw

There is something different about this coil I have come to realize after spending countless hours with it and also my DD's.
The response is so crisp, so fast, so precise that I can now tell a difference between that and my DD's.
You have to use both for awhile to hear and notice it but there is a difference and once you realize there is one you can sense it is not so little.
I can only describe the unique response on this one as one word...sweet.
Mike Hillis knows what I am talking about, he is a big sound guy and jewelry hunter and tried an F5 similar coil on his higher end Fisher and it worked fine but he knows what a coil like this is capable of and ordered a new concentric coil in the correct frequency just so he could take advantage of all of that sweetness.

This coil is not just fantastic on jewelry, coins and everything else come in great.
The depth I had in the mild soil in Kansas was about 10" at the high end, not as far as the big DD but enough to find every great coin or piece of jewelry I have ever found.
Using it in extremely heavy iron it worked just about as well as my sniper, hunting around heavy park trash also.
That squished configuration seems to almost to mimic the long thin scanning field of a a DD.
As far as pop tops a total non issue using this one.

Here in my very bad soil it goes as far and deep as my big DD easily, and with both of those and my sniper I have figured out a way to understand targets deeper here in the super bad soil infused with so much iron.

I was told when I got my F70 and then told people I was getting a small and a big DD that I would never use that elliptical again.
Not true...not true at all.
Those that think that way either never used one enough to hear or care about that difference, or don't hunt the way I do in my kinds of sites.
I switch to it from time to time for specific reasons like pop top infested sites, but also just as a change of pace and the more I used it the more I understood the uniqueness of that coil.
Now every time I put it on the first signal I get on a hunt I listen to that sweet tone and smile.
Sound is a big thing for me, I would never give this coil up for that and so many other reasons.

There...now you have heard of at least one person having great success with this coil and one that knows it so well he will never ever give it up.

HH
 
Ron, never got ahold of one for any of my 75's. Every Omega I have owned I had one for, including the 8500 I currently have and for moderate trash spots, I use and like the coil a lot. Keep us abreast on how it works out for you. HH jim tn
 
Revier,

WOW, good read, didn't really expect such a positive report about that coil, I watched the video and we are talking about the same coil.

I kind went through your report pretty slow and I haven't done near as well on the jewelry, but it made me think of why I like my little 6.5" elliptical concentric coil, it is the smother sound for lack of a better term.

I didn't want to put a lot of money in this 10" coil so I went with a used one, thinking it will only get used a couple of times and go to my coil bag. Now I am starting to get excited about trying this coil out.

Thanks

Ron in WV
 
You will love it... Not much less depth if any really.. Less Iron hits, less rusty bottle pop off caps, and it likes silver dimes a lot..
 
I can't speak for the concentric on an f75 but I did try one out on the f70 for awhile. I have a few spots that are flooded with the old rusty bottle caps and the 11" dd coil wasn't doing the greatest on them even though I learned a few tricks to help id them a little better. The concentric did a lot better on them but,, at the end of the day, for whatever reasons I just didn't make the good finds like I do when I use the dd.
Luck of the draw? Maybe, but I go with what I have the most confidence in. My soil is mild here so depth wasn't an issue with it so I sold it. Kinda wish I'd have kept it just because it did swing a little easier in tight spots. Good luck with yours, keep us posted on what you think..
 
Nobody mentioned how light it is. It makes the lower end seem very balanced compared to the 11 DD.

When I got the 11 DD, I almost sold it to get new detecting gear. What a mistake that would have been.
 
I will have to admit I really don't know, I have never hunted anyplace else so it is what is. I know most of the time I ground balance around 68 and some spots as low as 55. Can't say I ever paid any attention to the ground meter.

I also know I don't get the depth some claim they find coins at, about as deep as I can say I get is 7" to 8". Either I can't reach them or they are not there.

Ron in WV
 
WV62 said:
I will have to admit I really don't know, I have never hunted anyplace else so it is what is. I know most of the time I ground balance around 68 and some spots as low as 55. Can't say I ever paid any attention to the ground meter.

I also know I don't get the depth some claim they find coins at, about as deep as I can say I get is 7" to 8". Either I can't reach them or they are not there.

Ron in WV

Same with me due to southern mineralization and an unusual iron content in my soils.
As far as depth so far I have acquired, suspected and then dug good targets at the 7-8" level with all of my coils including this one.
Even that is rare...98% of the good old stuff here seems to be hanging out no deeper than 6".

The big DD might have a bigger depth advantage in mild soil, in bad soil like ours it's a wash or for me it seems to be.
I might have missed something deep with the concentric that my DD might have got a piece of but I really can't say if this is true or not.
Down deep the longer DD scanning field covers more area, but if you go slow and overlap with the concentric you won't miss much as far as I can tell.
 
Well I got my used 10" concentric coil yesterday. I haven't had a chance to hunt it yet, but I put it on the F75 and headed out in the yard and gave it a good check up. The coil looked to be low mileage. I gave the F75 a factory re-boot and ground balanced the machine with no problems. I put some coins on the ground and it ID good and was nice and smooth. I pulled the coil high over the coins like 10" or so and seemed to give a good strong signal. I switch from DE mode to BP and it responded good there as well.

No issues with this baby, it is ready to hunt.

Ron in WV
 
Listen to the crisp response in all tone modes.
High tones and silver jewelry sound especially good in 3-4H tones.

This is also a lucky coil, for me anyway.
On one of the first times I tried DP tones, and only for a few minutes, I ran across an especially stable signal which rarely happens in my soil and this was in the dry months last summer with rock hard dirt.
98-99 on every pass from every direction, thought it was a can but everything here at 4"or deeper soars high in the numbers due to the iron in my soil and this did sound good at a 4" depth reading plus even cans don't go that high here so I got curious.
Dug down, chopped down actually, to that 4" area and there was a Peace dollar!

Hope you have similar luck!
 
We'll be going out this Saturday and check out this new concentric coil that Ron has, hope it can run some silver out of the ground. Lately the silver has been tough to find, we need a good day to pick us up.
 
I've been using it on the LTD2 in FA mode and with DP tones and it works really well, it finds the good targets right between the trash. Also very good in weight and balance compared to the 11"
 
My F75LTD has been fully upgraded to the 2 level now also, and I love that added FA processor, but it doesn't seem to have the depth that the other processors have. My brothers and I are planning a hunt tomorrow (Saturday), I took mine back out in the yard and spent about 30 minutes swinging around just to get the feel of the coil on the stick. Jacco you are correct, it swings better than the 11"DD coil.


Ron in WV
 
Top