I have used an SGC 230 to tune a eandom long wire with great results
but it died and I installed a 4:1 balun and now us the internal 50 ohm
tuner in my Icom IC 746. It tunes the long wire the same but is it as
efficient as the SGC?

I plan on putting up a flagpole antennae and want to use the 4:1 balun,
one side to the ground radials and the other to the flagpole. Appreiate
any advice in this project.