VLF stands for Pretty Lower Frequency and is similar technology Employed in detectors developed for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Here are 5 explanations why you may perhaps decide on a VLF about a PI a https://www.d-ushop.com/forum/topic/84939/how-to-choose-the-right-coil-for-your-metal-detector