The front range of the device is 2500-meter square and the depth is 45 meters underground. Understanding the language that your detector speaks is how gold prospectors really become successful. A $500 detector in the hands of an experienced operator is much more likely to find gold than a $5000 detector in the hands of a newbie. In addition to the varying degrees of ground mineralization, you also need to consider how much trash is in the ground. Lower frequency VLF and PI machines will handle high mineralization much better than high-frequency VLF.
Under the Scots law principle of bona vacantia, the Crown has claim over any object of any material value where the original owner cannot be traced. Any artifact found, whether by metal detector survey or from an archaeological excavation, must be reported to the Crown through the Treasure Trove Advisory Panel at the National Museums of Scotland. Reporting is not voluntary, and failure to report the discovery of historic artifacts is a criminal offence in Scotland. The fastest, easiest for using, most modern and accurate system to detect gold, and the coins under the ground.
Another factor in determining what range of frequencies to look for when choosing a gold detector is the ground mineralization for where you’ll be hunting. PI stands forPulse Inductionand is used in specialty detectors designed for maximum depth in highly mineralized ground. Ideally, a metal detector for gold will be able to emit at least 14 kHz. Luckily, there are plenty of great high-frequency options out there.
Minelab Equinox 800
Of course this can be said for many other VLF detectors as well. Most gold prospecting detectors feature manual ground balance controls. This feature will allow the machine to be adjusted to filter out the general iron content of the ground.
Steve’s Opinion – The Minelab Equinox 800 and the Equinox 600 to a lesser degree are proving to have some major sensitivity to gold nuggets in mineralized ground. I have been very impressed with what I have been able to make the Equinox do as a gold prospecting detector. The stock 11″ coil is less than ideal for nugget detecting, but the new 6″ coil is proving to be very stable and have extreme sensitivity to very small gold.
Their main advantage is the ability to handle highly mineralized ground and hot rocks more effectively than the induction balance detectors listed above. Unfortunately PI detectors have rudimentary discrimination compared to VLF units. It is best to view PI units as all-metal, dig-it-all detectors. They do have some limited discrimination capability, metal detectors but it is not why you get a PI unit. Depth in extreme mineralized ground and an ability to ignore difficult hot rocks are the selling points. In addition, some PI units have poor sensitivity to small gold compared to VLF units, and so someone with less expensive VLF unit can run circles around someone with a PI unit at low mineral locations.