Geotech

Salt response strength is proportional to frequency and the Gold Kruzer runs at 61kHz so what you experienced is normal for that detector. You can try turning down the sensitivity but for many detectors the sensitivity is implemented in the back end or in software, and the overloading is likely occurring in the front end so it may not help with the overloading. But it may help with the falsing problem. The best you can do otherwise is to lift the coil higher off the sand until it's usable.

Even turning itself off isn't strictly necessary. The Manticore, GPZ, and Axiom TX circuits can all safely run for hours with no coil connected. I would also advise against changing coils while the detector is running, but even that probably will not damage the circuit.

I've never run across a PI design that will smoke the transmitter if a coil is not connected. It would be idiotic for a manufacturer to produce something like that. It is more likely that you could smoke a PI by shorting the TX coil, and even then the design should be protected against shorts.

When I was at White's I got one on loan from the manufacturer. Tested it with a TDI, seemed to work well but didn't get a chance to take it out for field use. It's made of polyurethane so it will hold up well even over a rocky surface. They used to make them up to 6x6 feet and sell mostly to meteorite hunters.

Here ya go. MARK SERIES- SCHEMATIC.pdf

I explain a very likely cause for halo effect in ITMD3: Even normal ground will have salts, more so if it gets fertilized. Copper can corrode and leach ionic copper nitrate into the soil adjacent to the target, creating its own salt halo, Silver not so much, and gold not at all, except maybe for low karat alloys. But even silver & gold, in saline soil, will have extended eddies. And wet soil will amplify the effect, which is why it is so obvious at the beach.

SL board is identical to the BH.

If it looks like a duck, smells like a duck, and craps like a duck...

Yes, you have to test for EMI emissions, both intentional and unintentional. This is true in practically all countries. If you have ITMD3 then see 28.3.

White's had defined follow-ons to the V3 called the V4, the V6, and the V8. It was called the Northstar family. Just kidding; there was a V4 in development, but then all the engineers left.

There should be no difference in depth between the Vision, V3, V3i, and VX3. As Cipher said, there is a difference in ground tracking. The Vortex has absolutely no White's DNA in it.

George, presentation is everything. You need to array them out and get them all in one shot, like this: I'm selling off most of these, so if there is anything you're looking for let me know. 😉

The DF is a 50/50 compromise between a 6" coil and a 12" coil. So a mono 6" mono coil will be more sensitive to tiny targets and a 12" mono coil will go deeper on larger targets. But not by a whole lot, either way.

Yes, that looks correct.