VLF means Quite Reduced Frequency and is the same technological know-how Employed in detectors crafted for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from 3 kHz to 70 kHz. Here are five main reasons why you could possibly choose a VLF around a PI https://www.bonback.com/forum/topic/279014/gold-detector-finds-that-sparked-legends