Some LPF measurements and settings.

I was looking at 20m LPF from LPF board and I saw something like this:

I’m not sure if my measurement methodology is good, so maybe i got wrong results 🙂

But if it’s okay — something is wrong with LPF. I decided to lower inductance by lowering count of winds of coils. I’ve cut 2 turns on the edge inductances and 1 on the center. And now, i’ve got something like this:

Anyway if i did something wrong — it’s not a big deal to rewind wires 🙂