I’ve got a question about using a random end-fed wire fed through a 9:1 UNUN and a length of coax. Someone is even selling a commercial version of the antenna here: https://kx3helper.com/endfed-40-6m-antenna/
Isn’t there going to be a lot of loss in that 25ft length of RG174 due to high SWR inherent to that random length design?
I’ve seen tables of suggested wire lengths (see below) but I have no idea where they pull those SWR figures from because a simple 9:1 UNUN is not going to result in those SWR’s. Someone please enlighten me.
Perhaps I need to deploy one and measure the SWR, although I’d improve it by using a type 61 ferrite core instead of EARCHI’s iron powder core.
Thanks & 73,