Above is a quote from Jasong, from another thread that hits the nail on the head. Somewhat a forbidden topic on OZ forums, which I guess says a lot about social media. This matter has been touched on by others when speaking about the "new age" coils on the Xs in other threads. While I`m a confirmed and dedicated Z user, I recognise because I`ve experienced the ability of these coils and how they have closed the gap( in the field on undisturbed gold), plus in some cases exceeded the Zs ability. Saying that I`ve also experienced more cases where the Z exceeds the Xs ability.
But it is interesting and really says it all about the dominance of ML, their only true competition to their latest serious gold detector is their model it replaced. This has been so for how many years? What are the other detector manufacturers doing? And why is it sort of "taboo" to post about this subject?
By Steve Herschbach
Over ten years ago I was pushing pretty hard on the idea that high power pulse induction detectors would eventually find use for more than just nugget detecting. Relic hunters in bad ground seemed a particularly obvious situation where PI detectors could pick up where the VLFs left off.
Daniel TN just made a great post over at Dankowski’s about the shift from VLF to PI, and how the PI use progressed up the power ladder from Garrett Infinium to White’s TDI to Minelab GPX.
I ended up calling this Steve’s Law Of Target Depletion. The basic premise is that if high value targets exist, people will start with discriminating VLF detectors and dig the easy targets. However, knowing good finds remain, over time more trash is dug and more powerful detectors used. As long as any chance of a good find remains, this progression will ultimately deplete a good location of all targets, good and bad.
Prospectors see this all the time. A location will start with trash and gold. VLFs cherry pick out the easy stuff. Then the “dig it all” troops go to work. Sooner or later you get to where just finding a target, any target, gets to be a challenge. Yet as long as a single target remains, good finds still might happen. If nothing else the trash can hide good targets lurking below, and so even trash remaining can be a good sign. You can never call a place detected out until no targets at all remain in the ground that can be found. And even then, a newer, more powerful detector may make the place come to life again, at least for a time.
Watching his videos it sometimes looks fairly impressive. But his testing methods are limited to some weird coil inside a home lab and seem dubious. The EMI filter is tested outside and seems pretty effective, but many of the reviews I've found online are completely counter to what he shows in the video and generally seem to be ineffective.
I've never run into anyone in the US running one of his GPX mods but he told me he's done quite a few for guys here in the states. Is it totally bogus? Anyone out there actually paid for the mods and put some field time in with it? Anyone bought one of those EMI filters?
My first PI was the SD2000 which I had modified.
My second PI was the GP3000.
And now my current PI is the GPX5000
Below are my results for my total nugget haul so far :
The SD2000M found 7.3% of the total with an average weight of 3.25 grams.
The GP3000 found 28% of the total with an average weight of 2.13 grams.
The GPX5000 found 64.6% of the total with an average weight of 1.18 grams