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The gold fields of Australia are considered the most difficult iron soil in the world that make it hard for metal detectors to find the gold. In these Australian gold fields, the most popular metal detectors are the Minelab GP 3500 and the GPX 4000. There are other PI detectors that can go deeper, but they cannot work through the iron signals as well as the Minelabs.
If you want the schematic, you can buy a Minelabs detector and use a solvent to dissolve the paint on the circuit board. Then, when the paint is removed, you can see the circuits and trace out a schematic.
Dear J Player I know some treasure caches where gold and diamonds are put in 1 liter pots underground, for this I need a discriminating detector , do we have a circuit here for best depth and discriminating too on thunting so that I can design it.
There is no PI detector that gives good discrimination of iron today. The discrimination of iron is expected to improve in new PI designs that we will see later this year and next year.
The best depth PI detector schematic is not here. Buy a Minelab GP 3500 or GPX 4000 if you want the best deep PI detector to see past iron minerals in the soil. Another deeper PI detector is the Pulse Star II and the Lorentz, but these cannot see past the iron minerals as well as the Minelabs.
There is no schematic for any of these detectors here. If you want a schematic for these detectors, you must buy the detector, then open it and trace the circuit to make your own schematic.
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