VLF stands for Incredibly Small Frequency and is identical engineering Employed in detectors crafted for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from three kHz to 70 kHz. Here are 5 explanation why you may pick a VLF in excess of a PI The https://international.projectwet.org/discussion/top-metal-detector-techniques-beginners