VLF means Really Very low Frequency and is similar engineering Employed in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from three kHz to 70 kHz. Listed here are five explanations why you would possibly go with a VLF above a PI https://www.fw-follow.com/forum/topic/78613/how-to-master-pinpointing-with-your-metal-detector