F Series Double Beep

aaroncr

Full Member
Dec 29, 2016
116
145
Kentucky
Primary Interest:
All Treasure Hunting
Surface coins or coins on edge will double beep...
 

Right, what HighVDI says. The coin is slipping between the two fields put out by your double D coil. Lift the coil an inch or two, and you should get just one tone.
 

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