High frequencies – above 15 kHz – are widely used to search for gold nuggets, small gold grains, and small jewelry. The truth is that low frequency metal detectors are good at finding objects with excellent conductivity. But gold does not have such properties. On the mineral discrimination scale, gold products have standards similar to oxidized iron. In this regard, it is worth choosing a metal detector with a wide range of sensitivity to ferrous metals.
The metal detector can also detect rings, earrings, and gold chains at medium frequencies. Devices designed specifically for gold detection are suitable for this. The software arsenal for these models usually includes a separate “golden” search mode.
DIFFERENT FREQUENCY TEST ON DEPTH AND GOLD
Chemicals in soil corrode metals, causing them to oxidize. The rust is partially absorbed by the surrounding soil, and the soil becomes more conductive. As a result, some metal objects appear larger than they actually are. Rusty objects are easy to detect at medium and large search depths. A similar trick cannot be performed with gold and silver, as these metals are almost impossible to oxidize.
When searching with a metal detector, most artifacts are found at a depth of 25-30 cm, and there is no particular benefit in chasing larger numbers unless the detector is supposed to be used for specific tasks such as searching for sewer pipes at a great depth. the deeps. After all, the deeper the signal, the greater the probability of errors and errors, in addition, you will have to drill deep holes.
Chromium VI 39200