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hi franco
This is my specifications of the device: antenna:50cm out put voltage sensor :about 5 volt L=3turn c=22p & variable Capacitor test point:100 grams of silver at a depth of 25 cm About 1 month in the soil. I've tested in practice.Unfortunately, in practice, had no answer. ![]() ![]() ![]() ![]() ![]() ![]() ![]() what is your opinion?
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