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Hello all, I was reading Steve's post on "Best detector values under $500 dollars"! And noticed something! I noticed that MineLab is the only manufacturer that listed the operation temperature, and storage temperature of their equipment! Being a Native of South Florida with its oppressive heat, humidity, and salt air, most of the year! I have experienced first hand what happens to electronics, plastics, adhesives, etc... that many of you in certain States, and Country's, have also experienced! Suffice it to say to the uninitiated, that it is a bad idea to leave these items in an enclosed vehicle for an extended period of time!♨️ The last couple of weeks, i have been trying to figure out if coil or detector color, can adversely affect function and longevity, in these types of conditions! (not just inside vehicles)! Proof has been hard to find, without the advantages that the designers, and bench testers, have at their disposal! I know "most" electronics have overload protection built in; from energy spikes , as well as heat! That would be an obvious "failure"! But short of this "failure", will detection depth, or circuit function be appreciably reduced based solely on the surface, and internal temps of the parts themselves? Especially the copper windings of the coil! Are PI detectors more likely to suffer, due to the added power output? And is this a cumulative, or situational effect that goes unnoticed? ( loss of depth with hot coil, or circuit function)! Just wanted to get that out there for any input you all have!! Based on the huge knowledge base on this forum!👍👍

I recently broke my stock dd and replaced it with the 9x12 concentric. For the life of me I could not ground balance the machine in snow, just an inch or 2 it would false out like crazy. I did repair my dd but it is slightly out. Sent the 2 coils to Garrett along with the AT Pro and they repaired the machine, put in new firmware and confirmed the dd was out of wack. Went to use the machine over the weekend and still can't gb it with the concentric. Does anyone have a 9x12 concentric on an AT Pro and can confirm the issue? Not sure if it is the snow or the machine is marginal and sensitive to the cold or not. Thanks

I’ve always been interested in this platform, someday I’ll find one for the right price and jump on it. With the talk of the new BountyHunter offering I was poking around reading posts and watching videos regarding these machines and stumbled across an odd one. According to the First Texas coil chart this coil isn’t supposed to work with this platform, yet here is Bill from DirtFishing using the little 6” concentric elliptical for the F70/75 on the F19???? Anyone else have any experience with this?? He doesn’t show any steel bottle cap responses unfortunately but this could add to these machines ability for foil/jewelry hunting in those bottle cap ridden park/picnic areas

Interesting reading if it works .....: Use Google translate for those not fluent in Russian I saw a similar post years back with Deus coils on GEOTECH it MAY be the reason why you can buy some electronic units only in Russia I am well tempted to build another nox for cheap.................... http://foxmd.ru/index.php?route=product/category&path=77_92 enjoy RR

Someday I hope to wake up in a world where I can order the detector directly from the manufacture with the coil I want. Right now White's and Teknetics are selling factory direct. OK, so where is my advantage? It's the factory. Let me order the detector and coil I want and stick it in the box and ship it to me. I can understand dealers not wanting to open already boxed units but the factory should not care. Keep some units unboxed and waiting for my order and ship me what I want. It is only a matter of time before somebody gets gutsy enough to do this and more. When I sold Ski-Doo snowmobiles you used to get what you got. Now you can pre-order machines and have them shipped from the factory with all kinds of custom options. Like custom decal sets... another good idea that detector companies could steal. It would be a blast to have a website where I could go, pick a detector, have a couple rod and handle options to choose from (S rod, straight rod, tall man rods, fat handles and skinny handles), different color and/or decal options, and of course whatever coils I want. Build it and see it built online and then order and ship. If this means I wait a little longer or pay a few more bucks, that's fine. Want to see it in action? Go online here and build your own Ski-Doo. It gets real fun when you get to the accessory page and you can see your model change as you add and subtract options. Where is the company that will break the mold and think out of the box when it comes not just to building detectors, but marketing and selling them in new and creative ways?

pri kontakt na bobina s aparata toi izklucva

Hi all, I am looking to buy an additional coil for my MK 14kHz to get some extra depth while in the field. I cannot decide between AF35 and KR40. Could you please advise which coil shall I purchase to add some depth for coin, jewellery and relic hunting and why? I would really appreciate your answer! Thank you in advance!

http://www.dankowskidetectors.com/discussions/read.php?2,172940

Anyone have any idea why my coil is overloading??? I checked up and down the cable to see if it was shorted to no avail.... It works fine with another coild. Trying to upload or link a video.... Standby---- https://photos.app.goo.gl/W1Nwk2kCRQixPE5H9 BTW Hey all you crazy Aussies-- Im still kicking---hope all is well with you all there...

I was reading about coils. They said a round DD coil has a lot of advantages over football shape coils. It has been a long time ago. Can't remember why ? Any one can help with this?😕

Dose anyone where I can get a coil end that's goes on the black control box. I have a 9.5" coil that someone changed the end for another detector. I can't find where to order on Whites forum. Thanks Dean

When I bought my tdi sl it came with the 12 and 7.5 coil. Recently I have sold the detector but I still have the 7.5 dual coil and I will sell it. Seeing photos to see the price I could ask for it turns out that my plate has something on the cable that I can't see in the images of other dishes I've seen. I would like if a partner could tell me what it is ?. Thank you

Guys, I wonder, does anyone know or have a diagram of the coil connector pinout? Many thanks! Apologies, didn't mean to start new topic, but it was moved separate. It may come handy for others perhaps. I'm going to tap into those wires to find out what they are once I have an inline connector made.

I had snagged my dd coil on a log and didn't realize I had put a hairline crack in it until I had noticed it was falsing on me and every time I tapped a small branch or brush it would sound off. I had made a small vacuum degassing chamber/pressure chamber for casting resins out of a paint sprayer and luckily my coil just fit inside. First thing I did was use the vacuum chamber to draw out any moisture. Next I built a small barrier out of some tape, filled it with epoxy then used the pressure chamber at 60 psi to force the epoxy into the crack. Not perfect but the coil does gb now. I think there are internal cracks that would be impossible to fill but at least I have it as a backup until my new coil comes in. My next project I think is to give some lexan sheets a go for coil scuffs that cover the bottoms so branches don't get caught up. Friend of mine wants one for his Nox 800 so will see how that goes.

I have a new sharpshooter, but now I want to replace the factory coil on my F44. The one that came with the machine is the teardrop,not a big fan of it. Looking for one roughly the same size or a bit bigger that would out perform it.Thoughts?? HH to all!

I have had my 800 since the end of April. I have to admit I was a little skeptical of all the hype but after using it a lot I the last 3 months or so , I am very impressed. This past Friday I was at a new site and when I picked up the detector to take it out of the truck the coil fell off. Both the mounting tabs were broken. I am pretty particular with my equipment so I really don’t think it was anything I did. I emailed the repair center and has been my experience in the past, they were prompt in their response and had shipping instructions to me that same day. They said the coil would be replaced under warranty but would take a few days because the service center had run out of coils and they were currently on backorder. This leads me to believe their must be a lot of people who have had the same issue. It will be interesting to see if this new batch of coils has beefed up the mounting tabs. They really are kind of flimsy when compared to the Explorer series of coils. I don’t mind the wait, it gives me a chance to get to know my 6 in. coil.

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.

These are used in MRI machines. The weight ,cost and flex might work with Metal Detectors For a state-of-the-art 3 Tesla MRI machine, the price tag to buy one new can reach $3 million. I remember a few years ago on another forum suggested a spiral coil using a printed circuit board.

Another coil question. Given that a mono coils sends a signal that is cone shaped into the ground what would the field of detection be on say a 12 in mono at say 10 inches vs a DD coil that has a blade shaped signal. Say this is in mild ground. Just how much depth is actually lost using a DD coil in the same soil conditions. Would a broader signal at that same 10 inches of depth have an advantage with coverage at that depth?

what is the best Coil use gpx4500 for Small nuggets weighing 0.2 g or 0.4 g Elite or N Finder Nuggets And circular or elliptical shape

This is the best video I have seen yet explaining the basics of search coils and why some may be better at some uses than others. By Garrett May 2019.

I just got back from Rye Patch, Nevada; found 14 small nuggets; 6.2 grams total. I found nuggets with all three of my X-Coils; 10” round bunch wound; 17” round spiral wound; and 17”x 12” elliptical spiral wound. I have attached a chart that is compiled from testing of the 10” round and the 17” round coils as compared to the Minelab GPZ 14 coil. The testing was accomplished in a Rye Patch gully by placing a two foot PVC pipe into a freshly dug hole. Gold nuggets of various sizes were lowered in a medicine bottle by a cloth measuring tape. This test was for my own relative comparisons; so those that want to critique the methodology feel free to do it another way. Two obvious depth improvements would be gained by increasing the Threshold setting and using headphones to listen for barely perceived target responses. After discussions with Lucky Lundy and Gerry McMullen I now have found a middle ground that works for me with the following settings; High Yield, Normal Freq. Auto, Sens 20, Volume 12 Threshold 1 to 27 depending on EMI noise level Tone 53, Vol Limit 12 Auto Smoothing Off, Ground Balance Auto, GS Off The 10” is very sensitive but noisy. When roaming across the desert it has me swinging back over false targets much of the time. But it works quite well to slow down and get into small openings between the sage brush and close to bedrock in narrow gullies. Some quick checks make me think that the 17”x 12” will have similar depth performance to the GPZ 14. But will cover three inches more ground on each swing. I will chart some depth comparisons when I get time to do some more testing. I use the 17” Spiral Wound Round coil when I want to cover a lot of desert. The extra inches in circumference with a little extra depth penetration over the GPZ 14 coil is an advantage. At this time I am retiring the Minelab GPZ 14 and the GPZ 19 coils. I have no connection to X coil, or to Davsgold except as a customer. X Coil and Davsgold have both been very responsive to my emails. Have a good day, Chet

Has anyone found a lower shaft for White's TDI to adapt to Minelab coils or coils made for Minelab correctly without extra rubber washers? Tecknetic's lower shaft comes close but is too short.

Clearly, with the huge amount of interest that is being shown in the after market coils for 7000, it`s obvious that there is a market out there for coils other than 14'' and 19". I don`t take the 19" out much because I have had very little success with it and with my bad wrists it`s just too damn heavy, but Minelab did tell us in the early days of marketing the 7000 that they would be releasing a 11" coil down the track, and now there is another company that nobody has ever heard of making a huge range of coils that are lighter and have so far been very well received by the public. What`s going on Minelab?

Regardless of the "Machine" your swingin' now! What coil was your favorite? My Favorite is below .Nugget Finder Advantage 3 spoke's the whole range... ."What a Ya Reckon....1:57 "Only Fools Reckon" and at 3:58 "Oooooo! How good is that Coil" "Are you Downgrading your Optimism? 2:33 I hope you Enjoy this "dig" as much as I do! Cheers! Ig