Hello, I am in the process of building a 5 band fan dipole ( 80-40-20-15 and 10 meter) and am wrapping the ft240-31 ferrite toroid with 16 gauge silver coated copper insulated wire. I am wondering how many wraps and what directions? I am finding multiple ways of doing it and the one I tried which says 12 wraps one way and 12 wraps the other way with 2 different wires didn’t fit on the toroid. So now I have 13 wraps of 2 wires and that’s all that will fit. Am I on the correct track or is there a calculator that I can use to figure out what I need to do? Thanks all in advance. I’m just learning this stuff.