VLF detectors are: smallest, lightest, most portable, easiest to operate, and most economical.
Not as sensitive to electrical interference.
VLF metal detectors need Less Power.
2. VLF Drawbacks:
VLF detectors will also produce so much noise that even hearing a target will become impossible, basic coin machines will almost always react in the same way, they will squeal
like a stuck pig with each swing.
There are areas that they will not handle and their depth ability is seriously effected.
Hot rocks and mineralisation will affect the VLF machine much more than the PI detectors.
Not very efficient in diving detection
3. VLF Examples:
FS2, GF2 and other many models.