VLF stands for Quite Very low Frequency and is the same technological know-how Employed in detectors developed for cash, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from 3 kHz to 70 kHz. Here's five main reasons why you could pick a VLF over a PI https://webhitlist.com/profiles/blogs/why-professionals-prefer-a-gold-detector