VLF means Very Low Frequency and is identical engineering Utilized in detectors crafted for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here i will discuss 5 reasons why you may perhaps decide on a VLF about a PI https://www.cyberlord.at/forum/?id=11711&thread=2397