VLF stands for Quite Low Frequency and is identical technological innovation used in detectors crafted for coins, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from three kHz to 70 kHz. Here are 5 explanations why you may perhaps decide on a VLF above a PI https://factory.activeboard.com/t72455560/the-secret-life-of-a-gold-detector/?page=last#lastPostAnchor