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Can't see coins on edge

Either the 9in concentric or the elliptical .
 
jarrow said:
[size=x-large]'Where did these figures come from?......Jarrow[/size]

Hi there J......good question.

They are extrapolated from some experimental work on the data provided by the detector's VDI figures.

The idea is to try and determine what optimum frequency any coin would best respond to.........

Problem is, knowing the correct conductivity for the alloys of the coins concerned.........

Testing the same coins on the Whites V3, indicates a similar frequency ratio..... that of being HALF of the Xterra 705's

operating at a single frequency of 17 Khz approximately...........All a bit complicated by the coin size etc.

Hope that sketchy explanation gives you some clue to the origins of the original figures.......

Hopefully, one can then realise what frequency / coil best suits particular coins of interest.........MattR
 
As one of the guys mentioned the Digger coil is a little coin monster. 6" size helps me scoot around tree roots and stubble in the woods. Perfect for trashy sites. Even excels at cellar holes around old iron. Its deep! You wouldn't think so but its a "Hot coil" and a lot of us have had to turn sens down to 18, 19 because its so hot you can easily "overdrive" it and that will be seen as unstable and or incorrect ID. And we do not loose depth running sensitivity down like that. It starts performing better when turned down. Separation is wonderful. It may have seen those coins on edge as well.
I've chatted with good experienced coin shooters that love the 5x10 DD 18.75 khz. Others 10.5 DD 7.5 khz. And yes the digger 6"DD 3 khz. I know guys that won't take the digger off their machine.
I think the 3 just mentioned make a great arsenal.
I've been slowly and stubbornly learning that the location is the top variable. After that its - location.....none of this techy stuff matters unless we put these coils over the metal we seek.
 
Digdoggy said:
As one of the guys mentioned the Digger coil is a little coin monster. 6" size helps me scoot around tree roots and stubble in the woods. Perfect for trashy sites. Even excels at cellar holes around old iron. Its deep! You wouldn't think so but its a "Hot coil" and a lot of us have had to turn sens down to 18, 19 because its so hot you can easily "overdrive" it and that will be seen as unstable and or incorrect ID. And we do not loose depth running sensitivity down like that. It starts performing better when turned down. Separation is wonderful. It may have seen those coins on edge as well.
I've chatted with good experienced coin shooters that love the 5x10 DD 18.75 khz. Others 10.5 DD 7.5 khz. And yes the digger 6"DD 3 khz. I know guys that won't take the digger off their machine.
I think the 3 just mentioned make a great arsenal.
I've been slowly and stubbornly learning that the location is the top variable. After that its - location.....none of this techy stuff matters unless we put these coils over the metal we seek.

Ok Digdoggy... that was about all I could stand... I ordered myself a Digger today and it is on the way! Honestly, I've wanted one for a long time, but this is the straw that broke the camel's back. For where I seem to find myself swinging my detector, its a good fit.

Like you say, I really like my HF DD Eliptical but it does have it's limitations. I know this because its all I have ever used. I've used this coil for coin shooting, prospecting, and on the beach in Hawaii (took the detector in my bag as carry-on) and it's great. As you say, maybe in a few months I'll look at a third coil but I can't help but think I should have a concentric in the mix. The soil where I live North of Houston is mild/moderate mineralization and everything I've heard is that concentrics can be a little deeper in those conditions.

I went out last night just for kicks and swung a few arcs over the coins and still not much. Then, I thought "Hey, if the coin is straight up and down why don't I hold the detector at a slight angle sideways to the ground...". The result? Fail. Hey, ya gotta try silly ideas or ya never know, eh?
 
Re Threshold ,make sure it's faint but audiable ,and not set to minus ,
otherwise small targets,or coins on edge will be hard to find.
 
kevmar said:
Re Threshold ,make sure it's faint but audiable ,and not set to minus ,
otherwise small targets,or coins on edge will be hard to find.

Great point, and it is set correctly. Before I start swinging I go "around the Horn" on my menu settings to make sure they're correct. Thanks.
 
Johnp3 said:
Digdoggy said:
As one of the guys mentioned the Digger coil is a little coin monster. 6" size helps me scoot around tree roots and stubble in the woods. Perfect for trashy sites. Even excels at cellar holes around old iron. Its deep! You wouldn't think so but its a "Hot coil" and a lot of us have had to turn sens down to 18, 19 because its so hot you can easily "overdrive" it and that will be seen as unstable and or incorrect ID. And we do not loose depth running sensitivity down like that. It starts performing better when turned down. Separation is wonderful. It may have seen those coins on edge as well.
I've chatted with good experienced coin shooters that love the 5x10 DD 18.75 khz. Others 10.5 DD 7.5 khz. And yes the digger 6"DD 3 khz. I know guys that won't take the digger off their machine.
I think the 3 just mentioned make a great arsenal.
I've been slowly and stubbornly learning that the location is the top variable. After that its - location.....none of this techy stuff matters unless we put these coils over the metal we seek.

OK Digdoggy... that was about all I could stand... I ordered myself a Digger today and it is on the way! Honestly, I've wanted one for a long time, but this is the straw that broke the camel's back. For where I seem to find myself swinging my detector, its a good fit.

Like you say, I really like my HF DD Eliptical but it does have it's limitations. I know this because its all I have ever used. I've used this coil for coin shooting, prospecting, and on the beach in Hawaii (took the detector in my bag as carry-on) and it's great. As you say, maybe in a few months I'll look at a third coil but I can't help but think I should have a concentric in the mix. The soil where I live North of Houston is mild/moderate mineralization and everything I've heard is that concentrics can be a little deeper in those conditions.

I went out last night just for kicks and swung a few arcs over the coins and still not much. Then, I thought "Hey, if the coin is straight up and down why don't I hold the detector at a slight angle sideways to the ground...". The result? Fail. Hey, ya gotta try silly ideas or ya never know, eh?

I've tried that too, slanting the coil. Nothing wrong with trying. When you get the digger try not to judge by air testing alone as for depth. Oh its good for its size , its probably not going to out deep a big 15" WOT or ,,you know what I mean. Really the ground your going to hunt is the only true test for any machine or coil. Its deep because you get the benefits of a 6" coil without loosing depth compared to other same size coils. I still have to remind myself that my little Bounty hunter discovery 1100 found the 1907 half dollar at 2". The 1964 kennedy half 2" with the BH 1100. I still worry about missing coins at depth but I'm learning the more I hunt that its a small % if at all were - so called "missing". And after digging steadily for 2 hrs. I can barely get the lesche deeper that 6-7" in my grounds here. I'm just too worn. I don't ever carry,.even my 18" mini spade shovel at the parks or schools. It gives people a negative thought about what we do. The woods ok but I hold it down and to my side when heading from the car. I've actually given up on digging any deeper on good signals a few times and with the digger coil. That's with only the lesche but past 8 or 9" I dought its coinage anyway. Have fun my friend.
Oh ya, that little digger scoots around the big old trees well. You prob know this, those big ole trees are good spots too hunt. The roots carry old relics up closer to the surface.
 
I ordered from Bart and my Digger is in the neighborhood today on the truck, minutes away from delivery. Of course, if I felt like I had just too much money in bank account, I could have ordered from here:

{edited to remove prohibited promotion of non-sponsor}

I'll not accuse them of gouging, but Dang...
 
I got my new Digger coil yesterday from Bart at Big Boys Hobbies. I have to mention they were fast, efficient, communicative, and reasonably priced - I couldn't have asked for much more.

Obviously I haven't spent much time with it, but I tested the new Digger on the recently-buried on-edge coins in my coin garden that started this thread. I must say that the results were interesting and made me smile a bit. Here's what happened in the order that the coins are buried:

1. Clad Quarter: Signal with the HF DD Elliptical was non-existent, but the Digger hit it. The signal TID moved around quite a bit, but it would have been enough to stop me for more investigation in the field. As we all do when we get a target like this, I moved around the target while sweeping the coil back and forth and at one point the signal was a consistent 42-44 that dropped of just a little as I moved the coil back toward my feet. I would have dug this for sure.

2. Clad Dime: Signal with the HF DD Elliptical was non-existent, but the Digger hit it. Just like above, the signal wasn't strong and certainly less so than the quarter, and the TID and tone varied quite a bit, but like the quarter above it would have been enough to stop me for more investigation. Moving around the dime while sweeping the coil didn't produce a consistent tone at one point as with the quarter but some angles were definitely stronger than others. I would have dug this one as well, considering the depth indication of three to four arrows. If I remember correctly the TID indicated something like 36-40, but I'm not 100% on that although I remember it was in the dime range.

3. Jefferson Nickel: As with the HF DD Elliptical, it still wasn't there. I expected this, though.

4. Zinc Penny: same story as with the Quarter and Dime - it wasn't there with the HF DD and now I was hitting it. Again, though, the tones and ID weren't solid at all but would have had enough consistency to pique my interest while in the field considering the three to four indicated depth arrows.

After I went "gardening", I hit an area of the yard that is really tough since its near an electric junction box and very noisy. I auto noise cancelled again and reduced the sensistivity, and going over an area I hit fairly thoroughly with the HF DD I was seeing targets that I don't remember being there. I don't remember these targets with the HF DD Ellip because the RF noise is so bad in that little area, but also these new targets were indicated as really deep and somewhat consistent (likely more beer bottle caps which hit in the high 40's TID and are prolific in my yard). I'll look for them again and dig them when I don't have my office pants on and I have protection from the mosquitoes that were out for vengeance...

After spending 15 minutes with this new little coil, I had a smile on my face. All of the things that folks have been saying about this little coil so far seem to be true. I can't wait to put it through its paces Friday at Saturday at couple of old sites I'll be visiting. Granted I don't have enough miles under the coil with the Digger to say unequivocally its great, and I sound a bit like a salesman in this little report back to everyone (I'm not), but after only a few minutes I'm a pretty happy dude. More to follow for sure.
 
That's cool news bro,
I've had the digger on for a couple months and everytime Im thinking about switching to my 5x10 I say, but there's just a little too much trash. Hmmmm. And I leave it on. I have so many hits I've left behind I'm going to start going back. I've been cherry picking quarters and then I'm going back to the other clad hits. Last I will slap on the 5x10 and dig most of the signals to check for jewelry. Its an out of the way little park and nobody else has been detecting it. (I think)?
Have fun buddy,,,
 
Thanks for that Digdoggy. I certainly noticed that this little coil picks very well through the sea nails of around the roof line and the deck in the back yard. The separation is great. I expect I'll be back and forth between the coils a lot, but learning just the right tool for the right job will be the fun of it. However, unlike like you, I am still looking for that virgin-ground out-of-the-way little park. Ahh, dare to dream!

Based on my little bit of time behind the coil, I am pleased with the Digger. There will certainly be much more to follow with it!

In the future Digdoggy, please keep your equipment recommendations to yourself.... You've already cost me too much money! :lol:
 
I hear dat, I ordered mine with the gold package. I bargained my bonus items for the Digger coil. I too was reading the guys having fun snaggin coins after others already hunted sites out. That's why I only have the 5x10 and digger coils. Don't really need anything else. Ive also got a ball field that the school just dicontinued use of and built new fields. I don't have the scratch to order larger coils so I'm gonna take my time and use white golf tees, maybe crazy glue a zincer to them, and mark a 20' x 10' area. Scower it out with the digger then mark the next. Cherry pick the coins out then go back with the 5x10 18.7 khz. I may just start with the gold coil, .depends on how I'm feeling it.
GL and think outside the box. Don't just hit the park or school. Bust right into the bush/woods alongside the open areas and hit around the biggest trees first. Or anywhere you can get the coil. These town owned properties usually have at least a tree line in the edges of the land there built on. You don't know what was there 100 yrs. ago. I walked out of a park and on an old path dug a 1964 kennedy half outa 2" of green moss. Did the same on a ball field. Walk a little old path and dug a colonial brass flat button.( One of my little secrets). I put knee high mucker boots and old blue jeans and bust right off the park or school into the bush if there's no paths.
Have at it n hit dat old silver where no sane man dares to walk.
 
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