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The metal and gold detectors Diaries

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VLF means Very Small Frequency and is the same technology Utilized in detectors designed for cash, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from three kHz to 70 kHz. Here's 5 reasons why you would possibly opt for a VLF around a PI The MINELAB https://kisanlink.com/forums/discussion/dairy-cows-cattle/gold-detector-with-clear-audio-signals

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