p2c
Bronze Member
- Apr 14, 2009
- 1,356
- 5
- Detector(s) used
- Minelab Etrac and Grey Ghost NDT; Garrett Pointer Pro
Hi all,
I've had my F-70 since March and have just gotten the 11 " DD this week. I've read posts where people claim that the 10" concentric (F70) is deeper in non-mineralized soil. I have only had the 11 DD (F75 coil) for 2 days. Not much experience with it yet. But with air test it is far superior, getting at least 2.5 more inches. I can't imagine it would be deeper in low FE soil or in any other soil (given its better in air distance and that all claim it handles bad soil better). The only situation I could see use for it is if you need a slightly smaller coil to get into places.
I only ask, because I am trying to figure out if or when I'd ever use the F70 coil over the F75. Sort of a detecting strategy question (or even deciding to keep the 10" coil).
Thanks
-Jon
I've had my F-70 since March and have just gotten the 11 " DD this week. I've read posts where people claim that the 10" concentric (F70) is deeper in non-mineralized soil. I have only had the 11 DD (F75 coil) for 2 days. Not much experience with it yet. But with air test it is far superior, getting at least 2.5 more inches. I can't imagine it would be deeper in low FE soil or in any other soil (given its better in air distance and that all claim it handles bad soil better). The only situation I could see use for it is if you need a slightly smaller coil to get into places.
I only ask, because I am trying to figure out if or when I'd ever use the F70 coil over the F75. Sort of a detecting strategy question (or even deciding to keep the 10" coil).
Thanks
-Jon