Re: uBitx V5 can't make a contact on ft8
The height is probably fine. Is your antenna working, probably not well.
I am using an efhw that is 10' high at one end and 20' at the other end. I have made phone contacts into eastern europe on my ubitx v3 . The end fed is 64' of wire driven by a 49:1 unun. Resonates well on all ham bands above 40. On 80 and 160 I am using my big loop. All done with the same radio.
Raduino bracket and Ham_Made_Keys