DIY DD metal detector 1 - first success
25:18
DIY DD metal detector 2 - coin at 35cm, audio indicator, PCB
12:40
Metal Detector Discrimination Explained (with a Garret AT Pro)
13:57
I Turn LNB into a powerful metal and Gold detector, New
27:06
DIY transformer/inductor tester
24:27
I found GOLD in an ILLEGAL ground sluice!
14:57
DIY deep metal detector with distance indicator light (audience suggestion)
26:55
How to Make DD Coil for Metal Detector Admiral
28:54