ask stan

On an rf transformer, if you run 4 turns of wire around the
inside, why is that referred to as a 16:1 (why is it T^2)
and how does that affect impedance on both ends?
does it step up/down 4x or 16x?  (volts, amps, and ohms)

voltage goes up, current goes down, so impedance (resistance)
squares.  that is why.

why if I wind an N43 torroid 4:4 and place a 50 ohm load on
the other end, does it have a high swr?

not enough turns

what is the advantage to winding bifilar?  don't just say it's better.

improves inductor's Q