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Everything posted by Jim in Idaho
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Effects Of Ground Balance On Target Depth?
Jim in Idaho replied to LipCa's topic in Metal Detector Advice & Comparisons
Not 1 gram...1 grain. I can send you a pic if you need one..LOL The bar is about 3/16" long x 3/32" wide. It's in a plastic card, so I can't measure the thickness. jim -
Effects Of Ground Balance On Target Depth?
Jim in Idaho replied to LipCa's topic in Metal Detector Advice & Comparisons
No Steve, no mods. All the tests show is that having the GB on increases depth. There's a slight increase by turning it to max, but even at the lowest setting simply turning it on makes a significant depth difference. I just finished the new tests on the 7.5DF. Not much difference due to battery voltage, and turing the Gb on made little difference on the 1 grain gold bar. But it made a +15% difference on the nickel. Battery Voltage tests Whites TDI SL 7.5"DF coil Freq: centered: Pulse Delay: 10: Gain: Max !6.2V Nickel 1 grain Gold Bar GB OFF: 10.75" 2.75" GB ON Switch in "all" Min. 12.75" 2.75" Max. 13.25" 3.00" GB On Switch set in "low" N/C N/C 12.3v Nickel 1 grain Gold Bar GB OFF 11.0" 2.75" GB ON Min. 12.75" 2.75" Max. 13.0" 2.75" -
Effects Of Ground Balance On Target Depth?
Jim in Idaho replied to LipCa's topic in Metal Detector Advice & Comparisons
My tests showed the improvement on both a nickel, and a 1 grain gold bar. The improvement was much less with the Miner John 5 x 9 folded mono. The way I conducted the tests was specified by Reg Sniff, and I conducted them at his request. The tests were posted on Whites forum, and Findmall, if anybody is interested. The following tests on the 7.5DF I made a mistake, so should be ignored. I haven't had time to do them over. Jim -
Effects Of Ground Balance On Target Depth?
Jim in Idaho replied to LipCa's topic in Metal Detector Advice & Comparisons
Steve, if Johns unit is defective, than so is mine. My testing results, during my battery voltage tests, exactly mimic John's machine. There's a definite improvement in depth with the GB on, even if it's set at it's lowest level. And, with the 16.8 v battery pack, my SL can clearly see a 1 grain nugget at 3" with the 12" DF coil. Jim -
What's Your Pleasure In Batteries
Jim in Idaho replied to Ridge Runner's topic in Metal Detector Advice & Comparisons
Lithium-ion packs for all my Whites detectors. Easily removed for charging. Bumping the TDI SL pack to a 4-cell really wakes up that machine. 16.8v instead of 12v. Doing that with my other Whites units would damage them, however, so run a 3-cell Li-ion in the GMT and DFX. Found a charger that lets me set the output voltage and current, so I can use the same charger with both packs. But, I need an extra pack for the SL....it only gets about 5 hours on a single charge. I plan on building another this winter. Jim -
I'll tell you, Mitch, that's a good policy anywhere in the outdoors anymore. I never approach strangers when I'm out alone....nothing good can come of it. too many pot-growers, drug-runners, etc. I make very effort not to be seen, too. jim
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Well, I figure people aren't out to steal my truck, so I put the keys in the bumper of the flatbed. If they really want to get in and steal my gear, I'd rather they just used the key anyway. My big concern is simply being stranded. Thus the keys stay at the rig. I don't even have electronic keys on the old Dodge. Jim
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LOL...I don't blame you. Especially in places that get a lot of human activity. My biggest fear, though, is wearing a hole in my pocket, or something, and losing my keys. I'm usually WAY out in the sticks, and alone....real cause for concern. I'm now WAY too old to walk 30 miles to civilization....Ha! jim
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The Otter Box is fine, but what do you do if it ends up floating down the river? The idea of hiding the keys at the vehicle is that is where they're needed. Having them in the Otter Box while floating the river is no different than having them in your pocket while hiking around....if they end up lost, your vehicle is worthless for getting you home. Just sayin'. Jim
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Quartzville Mining District - GMT And TDI
Jim in Idaho replied to tboykin's topic in White's Metal Detectors
Nice writeup and pics, Tom. I enjoyed that. jim -
Does Anyone Still Make BFO Detectors
Jim in Idaho replied to FeO2digger's topic in Metal Detector Advice & Comparisons
I've got one of the old Master Hunters. It was the first detector I ever owned. It came with two sets of dual coils. You can select which coil you use by flipping a switch. Mine still works, though i rarely use it. A few years ago, when it was the only MD I owned, I used to locate my property boundary stakes. Jim -
LOL...nope, I was thinking of Steve Howard, Steve. My bad.
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Yeah, it might be a bit much. I'd like to find a charger with an adjustable final voltage. Then I could limit it to 16.0 volts. That would also make the battery pack last longer. I think Steve H said the SL could handle voltage up to 18.0, but I'm not sure of that. Best bet is to stay at, or below 16.0. One of these days, I'll get around to doing a test to determine how much extra depth, and/or sensitivity you get from the increased voltage. I do know my SL will detect a 1 grain gold bar at 1 1/2" in an air test, which isn't bad. Jim
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I've been running a 'reidman" 16.8 volt pack in my SL for about a year. No problems so far. Haven't done any tests to see if the extra voltage helps. Jim
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Gem Stones Of The United States
Jim in Idaho replied to Steve Herschbach's topic in Rocks, Minerals, Gems & Geology
Many thanks, Steve....looking forward to reading that tonight! jim -
Wanted - Mods For TDI Metal Detector
Jim in Idaho replied to Strider55's topic in White's Metal Detectors
All the best on your surgery.....I'll add a couple of prayers tonight. I hope Hard is right on Whites improving the SL. Jim -
Wanted - Mods For TDI Metal Detector
Jim in Idaho replied to Strider55's topic in White's Metal Detectors
I'm already using a 4 cell L-ion pack. 16.8 volts with a fresh charge. Steve Howard said that was about all the voltage the SL could handle. Reg had a couple of mods that allowed a faster sweep speed without losing sensitivity on small gold. I've got the writeup on those, just need the right technician to get it done. I was a radar tech in the Air Force, but Reg said it required somebody with experience in current devices. Jim -
Wanted - Mods For TDI Metal Detector
Jim in Idaho replied to Strider55's topic in White's Metal Detectors
If you find somebody doing the mods, please post it. I'd like to have Reg's mods for the SL done to mine. Need somebody with micro soldering skills from what Reg told me. Jim -
Wanted - Mods For TDI Metal Detector
Jim in Idaho replied to Strider55's topic in White's Metal Detectors
Last I knew, Reg had quit working on mods. Said he had a friend thinking about doing it, but no decision so far. Jim -
21 Meteorite Books On Pdf
Jim in Idaho replied to DolanDave's topic in Metal Detecting For Meteorites
Many thanks! Jim