An alternative to ladder line is running two parallel runs of coax
(RG-213) with only center conductors connected to the loop and the
radio end center conductors to a balun which solves the unbalanced
issue. The two runs of coax can be taped together.
Two runs of coax will have something
Newbie Dave, KX3 owner with built in ATU. I have a loop antenna feed point line
question. I know this is not an antenna group but I want something optimized
for the KX3 and QRP.
I have installed a 40 meter skywire horizontal loop antenna in my attic, 135
feet in length. I hope to use the
Ladder line doesn't like to be near stuff... Feed it with coax, even
with a high SWR on the coax your losses will be negligible over that
length. A 1:1 or 4:1 current balun at the feedpoint would probably be a
good idea, but isn't a deal breaker...
73, Ross N4RP, who needs to get his 160m
Dave,
Opinions on antennas are connected with a lot of myths and it works for
me opinions. You mmight want to read the Antenna and Transmission Line
article on my website www.w3fpr.com. It is not filled with formulas and
math, but can give you some idea of antenna system behavior.
You say
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