CoilFisher
Hero Member
- Jul 17, 2011
- 957
- 251
- Primary Interest:
- Metal Detecting
Any opinions on this one? (Constructive ones ):
The main difference I find is that the DD gives false high readings in the 70s and 80s on rusty bottle caps.
The 6.5 concentric will register much lower out of the coin range and makes disc. more effective.
Since switching to the concentric in trashy bottle cap infested areas, i have almost totally eliminated
the bottle cap problem i had when using DD coils. I am looking to add the 10" elliptical concentric to my
gear to get better depth, and at the same time eliminate rusty bottle cap false high VDI readings.
Awesome advice digger27... you have just given me the most helpful advice i have ever gotten for my F75.
You may have just saved my sanity.
HH