I now have the Nel Tornado 12"X 13" Coil and that NEL has turned my Teknetics Omega into a much more stable machine.
I live in the country ,but have overhead power lines running through my front yard,i got 50 aces.Under or around the power lines with the 11"DD Tek. coil i could run the sensitivity at around 50, and with the stock 10" concentric i could run the sens. to 60 with the start of EMI
With the Nel Tornado i can run the Sens. at 99 right under the power lines, and its is very stable in AT/ All Metal,with a very sweet smooth threshold sound, and in Disc.i can run the sens. at 99 and it does not make a sound not a pep till it finds a target no EMI what so ever.
So i took it into the house and got the same thing ,but it got a little chatty but not bad at all for being in the house....air tests a Large Cent good till 16" and a little more but iffy,it gets the same depth in Disc. as it does in All Metal.
The coil wire is very thick and much better shielded from EMI than the Stock coils,and much better built IMO.
I`m very pleased with the NEL.
Of course it`s bigger than the the stock coils, so it should get more depth,but it Should pick up much more EMI ,but it don`t.
I just wonder if ALL the NEL Coils have that Very Thick,Very Well Shielded Wire on them ??
Gary