I recently purchased a minelab gt 16000 VLF detector (that I would like to sell or trade by the way) but I was wondering if it's possible to build a digital meter, like the 180 meter that Ron in Michigan builds for the Sovereign detectors? I've been searching the web for diagrams but I can't find any. I assume it's not possible to do with a vlf unit? email me at z8chase29@yahoo.com