Linear loaded doublet
Looking for a bit of a sanity check on putting together a linear loaded doublet.
My plan is to put together about 70-90 ft of element, either 450 ohm window line, 300 ohm twin lead or just 3 conductor electrical wire. Is there a significant difference here between the three for this type of setup? Perhaps just the usual caveats about rain loss? I’d rather go with the latter two for weight but wasn’t sure if there’s any material difference here.
I figure since I’m feeding it with window line or twin lead into a balanced tuner the length of the antenna isn’t critical (and going this direction to lower losses and get multi band capabilities without fussing trying to get a match feeding it with coax), but open to feedback here.
The goal is to get something perhaps slightly more efficient on 80m than an 88’ doublet, and maybe a smaller variation for portable use. Not sure if the juice is worth the squeeze as well and I should just stick with a regular short doublet?