I've read for years ( and never asked why ) that when you're operating
into a high SWR that a high impedance feedline ( say 450 Ohm ladder
line VS 52 Ohm coax ) provides much less loss. I think I recall
someone in this group saying that its mostly current losses. Does the
high impedance line have higher voltage points across its length and
therefore less current flow for a give power level ( say 100 watts )
than the 52 Ohm coax ?

I guess an analogy if the above is true could be made about the 120Kv
+ power lines on tall steel towers that are about 500 feet behind my
shack. ( Lucky me ! ) They have much less loss than trying to run say
120 volts and all the current flow that would entail for the same
wattage delivered to homes, business etc ? I can imagine the size of
the conductors required to deliver the same amount of wattage at 120V
VS 120 Kv +/-.

Thanks .... Gary