VLF stands for Extremely Reduced Frequency and is similar engineering used in detectors developed for coins, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from three kHz to 70 kHz. Here i will discuss five reasons why you may perhaps opt for a VLF more than http://taniecirlandzki.phorum.pl/viewtopic.php?p=117860#117860