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ITMD1&2
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Probe PCB from Silverdog
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ITMD3
Discussions concerning content, circuitry, source code, etc for the 3rd edition.
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Advanced Metal Detecting Research Lab
Italian website run by Leonardo Ciocca.
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Spanish metal detecting forum.
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Tech forums dealing with the various Pulsdetektor projects. German only, Click Here for a BabelFish English translation.
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THunting.com is the former host for Geotech. These are general Treasure Hunting forums.
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The world's largest forum dedicated to the discussion of LRLs and related devices.
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Yesterday, 10:38 AM
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There's so many options!!!
I have found real small specks of gold on my property and my mate has a creek running through his property which is mostly dry that may have something in it too.
I'm looking at building a detector, just the schematic and maybe a PCB if available as I have...08-03-2026, 01:28 PM -
The electromagnetic characteristic that distinguishes one substance from another is phase. If the phase of the detector's receiver impedance is indistinguishable from the phase of the surrounding soil impedance, they have no effect on each other. To reduce phase noise in the detector's receiver when...08-03-2026, 04:17 AM
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I propose bipolar PI MD design with GB and ready manufactured DD coil (15" x 12" SEF coil from DETECH company). This project is based on bipolar MD with GB from ITMD3 book, but have more aggressive timings with hope to be useful for smaller nuggets....04-16-2025, 03:28 PM
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I did come across GOLDSCAN 4 SCHEMATIC on this forum a while back. Does any one know where it is located.
Thanks06-19-2004, 02:10 PM -
I got a hold of a broken TDI and it did not come with a battery. When I run it from a powersupply at 12V only the red light comes on. I need 15V to get all 3 Led's on.
The wavy threshold is more stable at 15V also. I was going to use 3 3.7V lithium batteries to power it as I thought 16V was max....07-23-2026, 08:22 PM -
The electromagnetic characteristic that distinguishes one substance from another is phase. If the phase of the detector's receiver impedance is indistinguishable from the phase of the surrounding soil impedance, they have no effect on each other. To reduce phase noise in the detector's receiver when...08-03-2026, 04:17 AM