Made metal detector with high depth

The construction of a metal detector with high depth requires a special advanced circuit, and the construction of a metal detector with high depth can only be done by designing a circuit in the frequency type, and designing any type of detector or metal detector or manual ground radar or mine detector in the frequency type with VDI number settings. It is in edit and threshold level and volume, it provides the desired performance conditions for separating gold in depth, and in general, not every person, company and factory in the world can build a frequency detector or a frequency metal detector with the principles of frequency radar for high depth or great depth. And the construction of a magnetic type metal detector is not able to find gold, silver and non-magnetic metals at a high depth, and this can be recognized from the structure of the magnetism. It has all kinds of affairs related to metal detectors