Yes the Coiltek WOT 15" at 7.5kHz is a majestic coil.I give it a lot of credit for its design and handling.Very stable coil that works fine on abandoned lands.Since it cover so much ground I shouldnt recommend it on households where its usually are
very ironinfested.Go for a smaller coil there,like the 5x10"DD or 6"DD.
On my latest search with WOT on a abandoned park,or should I say cow pen

I had some good finds on places we have been over many times.But this day was a WOT day. My friend with his AT Pro didnt have the same luck this time...haha..
I had my Xterra 705 with 15" on all metal as usual,and a sensitivity at 28,since some targets will be deep. Ground balance on this search ground is generally around 30-40 so its not that mineralised.Full volume and a set of XP Backphones with volume controll,cheap but very good headphones.
I started up with 1750 1 ore in bad condition and older coins kept coming up.
When we arrived to an old bridge foundation I had a monstreus signal that jumped in at 46 sometimes 48.I walked around the signal and it had the same constant high pitch signal,and I was almost certain what it could be...
Only one problem,it was right under a large cow dung....haha..but,I dug a big round clod and there just 4 inch down this gigant 1 ore 1628 coin was looking at me after almost 400 years in the ground...WOW!!
This was my fourth 1 ore 1628. A coin that measure almost 2 inch. Crazy coin!! Imag