TDI Pro And SL Difference?
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By Cascade Steven
I am interested to learn more about the 7.5-inch mono versus the 7.5-inch Aussie coils that are available for the TDI series. Is there an advantage of one coil design over the other when hunting for nuggets? I have the standard 12-inch dual field and also a Super Pulse 150 coil and am curious whether I should add either or both of these coils to my collection? Or should I purchase one of the new Nugget Finder 8x6 Sadie mono coils? Any thoughts or advice would be greatly appreciated.
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By Tony
I opened up my TDIBH the other day for some fiddling around and checking out a few things. I powered up the detector with all of the guts and board opened up and had it hooked up to the 14.8v (4 x 18650 cells) battery pack. I had it going for just a few minutes when I gripped the circuit board as part of my “fiddling” around......well I dropped the board and swore a bit in response the burn I was expecting on my fingers. Well it turns out that on the opposite side of the board behind where the big capacitors sit is some sort of heat sink and I can tell you the heat from this spot was something else. The detector has and runs just perfect but the hotspot really surprised me.
I decided to hook up the 12v battery pack and let it run for a decent amount of time and it never got past a mild warm on the back of the board. That extra couple of volts is generating some serious extra heat.....bit like on the heat sink area of the CPU chip in your computer.
I honestly don’t know if the detector can handle this extra heat long term but I’m not taking any chances. I’ve moved back to the 3 x 18650 battery pack which I knocked up when I first got the detector. There is a slight loss in depth but surprisingly not too much. I feel the performance of the 11.1v Lithium setup is maybe 1 to 2 inches behind the 14.8v “hot pack”.
You can see in the photos the big caps on the detector and where the heat comes from. The other photo is my 11.1v pack which packs some punch and lasts much longer then the stock NiMH pack.
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By BRUNO
Hi could you help me to contact the gentleman who makes the mods for the TDI ( Regg's friend )
Thks for your help guy's
Bruno 🗿💍
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By GeoBill
Looking for advice on a small elliptical coil purchase for a TDI Pro. As someone pointed out in the Classified section Serious Detecting is having a clearance sale. Looking at the Coiltek 10 x 5 Joey Mono, and the Whites 7.5 x 12 TDI HI-Q Dual Field. See lots of good reviews for the Joey, but not much is posted on the HI-Q. I guess that initially the HI-Q was only available as part of a TDI-SL package and some were hoping that it would be available separately in the future. It appears that when it became available on its own that it was possibly misleadingly labeled as for MX series detectors, and I was wondering if that is why you don't find much feedback specifically on that coil.
Any feedback on either or both would be greatly appreciated.
Thanks
Bill
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By oddcoiler
Speaking of PI detectors.
Now that Garrett has aquired White's.
How about a multi frequency Whites TDI ???
98 frequencies from the Infinium.
Added to the Whites TDI with it's incredible ground tracking and ground balance.
That sounds interesting !
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By bamajoe
I have a TDI SL coming in today. I know most people want to detect for small gold. In my bad soil I want to detect silver coins that my CTX3030 can't reach. I'm a long way from the beach and probably long way from gold. That leaves coins and relics. I've heard that larger coils tend to ignore small trash which sounds good for a coin hunter. I know that if you raise the delay that this helps but with a loss of depth. A 12" dual field and 7.5" dual field are coming with the machine. What could I get that would be better suited for detecting coins?
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