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Hey Bob. My guess is your coil is probably fine. Yes the VDI #'s will be off a little, that's typical. White's OEM coils will even vary a bit up and down consistently when you switch from the stock coil to larger or smaller coils. The SEF coil is equivalent to the DD coil and I'm here to tell you that the D2 "sees" bottlecaps as quarters regularly also (one of the few downsides I've come across with ANY Whites coils/products) and that's what it would appear is happening with your SEF. The DX-1 (1"coil) VDI reading foil when the machine's coil VDI is in the copper/silver range is also something I've run across with my Whites coils. I've found that sometimes the machine is fooled by regular, usually aluminum, trash and will ring it up higher on the VDI (70's - 80's) than what you would normally expect it to then when I throw the DX-1 into the hole it reads the target down lower in the "proper" range . . and is right ! Apparently the DX-1 is better at separating and identifying because of it's physically smaller size . . at least that's my best guess. I use this to weed out bad targets regularly thaat my machine is initially saying are good. The DX-1 will save you a lot of digging this way. As I said, I think you have a good coil. You obviously pay very close attention when you're hunting so check it out, see what you think and let us know what you determine. Good luck . ..oh yeah and by the way this is all JMHO.rlett said:I am getting VDI's in the 80's and when I use my DX1 it shows in the foil range! The coil puts steel bottle caps as quarters. Do you think I got a lemon?
Bob