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I thought the Tx returned signal dropped off at -3dB in both directions, i.e. 6dB per inch depth. a 10V Tx signal, would return -60dB at 10 inches. From what I've seen, this seems to be true.

Very good... I made this device according to the drawing that you designed, sir... but unfortunately the sensitivity is very weak... I used a coil of my own making... Is it possible to make any simple changes in the device in order to achieve compatibility (inductance, resistance) with the coil that I make? ..thanks in advance

great work!

very good job moods! I haven't finished testing version 3.0 yet... I'm trying to build a coil similar to that of ML commander. I will get back to this project in a while. Thanks for posting all your efforts!

This device captures raw gold

This device captures raw gold

2 amps peak to peak in VLF mode.

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I really like the sound, it's very nice. How can I modify the output filter for 64 or 16 Ohm? since most headphones have 32 ohms in each speaker (64 in series or 16 connected in parallel)

esse áudio è o vco o aparelho não estou reconhecendo qual è😊

Áudio muito agradável excelente projeto parabéns