VLF means Very Lower Frequency and is the same technological know-how Utilized in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from 3 kHz to 70 kHz. Here's five explanation why you may decide on a VLF about a PI Our writers https://www.fw-follow.com/forum/topic/78632/metal-detector-tips-for-desert-exploration