Disgusted By $500+ Price Of Garrett Deepseeker Coil (and Minelab Prices)
What is the biggest coil that you have used? I have an 18" Nugget Finder that works very good. I don't need a sled. It is light.
The 19" Z coil is a beast. Many of us know what it takes to wield that monster over good ground.
Reg's Gold Album thread has several pictures of prototype coils that were very big.
Here is a picture I found on Bill and Linda's site for John Bowles. http://www.billandlindaprospecting.com/johnbowles.html
What are some of the other ways to use and mount coils?
I still have my old White's Goldmaster V-Sat. It's the same one I used when we hunted together at Crow Creek. I have two coils for it, the original coil it came with and the very small one that is used for tight places and bedrock. This is the coil that White's first put out when we lived in Alaska, small and black with no markings on it. Steve Houston introduced it when he came to Alaska on his promotional trips.
I don't use the original one because I find it impossible to ground balance with that coil, so I am limited to just using the small one. That's ok by me since most of my limited and sporadic nugget hunting is in bedrock areas.
The problem I am having is that I constantly get false signals and lots of other noise whenever the coil comes in contact with anything. If I bump rocks or brush, or if I even brush it up against wet grass it will false signal. this makes it impossible to "scrub" the ground as you advise people.
I am wondering if this problem might be in the settings on my control box, perhaps I am choosing the wrong settings? I have tried just about everything I can think of, but it does this all the time and is very annoying. Is there anything that you can think of that I may be doing wrong?
By Hard Prospector
I have asked this question to many very good detectorists and have got varied answers. Some say yes on the tiny stuff and some say the protective cover isn't thick enough to ever be a concern. I have heard it said that its more likely to reduce depth / sensitivity on a VLF but not a PI. It would be nice to get some kind of consensus on this subject and thanks.......Rob
By Ridge Runner
Here I go again thinking outside of the box.
We have a round coil like the SDC 2300 will have .Now your out in the field and you need a coil with a different shape to get between the rocks. This new coil will have a hinge at points around it. Now all you have to do is push in on the sides of that round coil to fit the size you need at the time. Each hinge point has a waterproof cover of canvas on the inside to keep out the dirt.
If a toy company can make a transformer. Then why can't we make a transformer coil?
By Ridge Runner
When dealing with people you may have to use psychology to hunt on their property. What you may not be thinking about is that coil you have on your detector has a attitude. The person your confronting is looking at that big coil and they know nothing about detectors are detecting..That person you see don't even see you.All they can see and thinking about is that big coil and at the same time thinking is everything is going to be big too. You and I know better but all they see is big hole and deep hole.
Now this is where the Social Psychology of a small coil comes into play. That property owner first look is at that small coil thinking he's not going to harm to my yard with that little thing. It don't come to him that the one behind that detector could do more harm than detector ever could.
Let some time go by and as you get to know the property owner better then bring out the big coil. Be sure to always explain the hole you dig won't be over a half dollar in size if can. Leave that yard with a look like you haven't been there.
Don't get me wrong I like a big coil and on open ground say beach hunting I wouldn't leave home without it. The thing is a small coil looks friendly without that attitude you don't need.
Swing low and slow!
By Steve Herschbach
I am being sarcastic but it is true. Back in the day when I had these on the shelf new they were hard to sell. Now you see them like this one on eBay going for crazy sums of money used. How is it there is a coil that goes for up to $500 used and not one of the aftermarket coil manufacturers will take a stab at it? Yeah, I get they need to be hand made and tuned but Jim Karbowski managed to do it and they retailed for $219.95 new. Was it black magic? A lost art, now known to none?
The BigFoot is a 3" x 18" coil specially wound internally in a figure 8 pattern that eliminates electrical interference and allows the use of the front half of the coil for pinpointing with the DFX, which was designed with the coil in mind. The coils were hand made by Jim Karbowski who called his company Applied Creativity. They were sold exclusively through Jimmy Sierra. Jim Karbowski unfortunately passed away in 2007 and the coils now go for far more used on eBay than they ever did new. http://www.gazettetimes.com/news/local/obituaries/james-karbowski/article_c8505ae6-50ec-5639-8a21-33a96b718ad4.html The coils are labor intensive and despite lots if lobbying I never could get White's to make them.
BigFoot Technical Report
BigFoot Field Test
Diagram (in Russian)
More Technical Tidbits/Guesses
This report on coils has some interesting notes on figure 8 coils on pages 4 and 5. It mentions that the field reverses from front to rear and this is true if the 14 khz BigFoot is used on the MXT. The DFX is specially designed to compensate for this and so has uniform responses front and rear.
There is also a more conventional elongated DD design made by Tesoro called the Cleansweep. The BigFoot has a soft spot in the detection pattern in the middle where the figure 8 crosses over. The Cleansweep DD design is easier to make and eliminates that issue. The problem for me was I really got addicted to the DFX ability to trigger just the front half of the BigFoot for quick pinpointing - it is so good it is better than most dedicated pinpointing devices.
No, you can't have mine, not even for the absurd price of $500!
Oh yeah, beware. There are at least three BigFoot versions for different frequency White's machines. The most sought after are the DFX/MXT versions but there are others, and they do not go for as much. Here is a real beat up one for the old Eagle II
I have been lobbying Makro (gave up on White's years ago) but they have not bit - yet. Sure would be a great reason to buy a Racer, having a coil like that for it!
Here is my BigFoot and a friends in the U.K. on our MXTs.
And here is the same one on my old original White's Vision when they first came out.