Non-Resonate End Fed UNUN.

[BI1EIH]

For 9:1 unun I prefer lower mu ferrite toroid such as 61 or 52 with 8-12 turns by experiment. The 52 ferrite has a higher curie point thus maybe better for high power (watch out your plastic case).
Also a 9:1 with random EF-wire seldom provide an ideal 50-ohm load, so not recommend for QRO (unless use an ATU).