VLF means Really Reduced Frequency and is identical technology Utilized in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here are five main reasons why you could go with a VLF above a PI The MINELAB https://www.hoomet.com/forums/topic/76683/best-metal-detector-models-reviewed/view/post_id/232732