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Of course it is not a complete copy .Work with a resonant coil and finds deep even small objects. Wonderful discriminator. Can also work by discriminating with two sounds.
I say a scheme with motifs from a musketeer. But it is wonderful for beach and land. It is easy to do. It is only necessary to insist on the required phase of the received signal. This is done by adjusting the resonance of the receiver.
Thank you very much bgs for the schematic!!
It would be good if you could also share with us the data of the TX and RX coils with more details, as is the case of the wire section and the template of the double D coil.
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