VLF means Incredibly Low Frequency and is identical technologies Utilized in detectors built for cash, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here i will discuss five reasons why you may go with a VLF over a PI Disclosure: https://ava.ifsul.edu.br/reitoria/mod/forum/discuss.php?d=38239