VLF means Quite Lower Frequency and is similar know-how used in detectors constructed for cash, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Here's 5 explanations why you could possibly select a VLF about a PI Our writers and editors https://dp5.boards.net/thread/1470/gold-detector-reliable-depth-performance