VLF means Extremely Lower Frequency and is the same technological innovation Employed in detectors constructed for cash, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from three kHz to 70 kHz. Listed here are 5 reasons why you could possibly choose a VLF about a PI https://dcoinformatica.com/forums/topic/109402/gold-detector-adventures-on-riverbeds/view/post_id/736599