When used on higher bands the radiation pattern will vary depending on where
the loop is fed. There are too many variables to predict this without
computer modeling. You would be better off using 300 ohm line instead of
450. 300 ohm would more closely match the impedance of the loop on higher
bands and result in lower swr excursions but either type of feeder will work
great. The obvious advantage to corner feed is less sagging but your feeder
is lightweight.
73

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Steve
"VK3XL" wrote in message
...

Hello all, I am planning to erect an 80 meter full wave loop antenna in
the back yard. The articals I have read so far all seem to feed the
antenna at a corner with either 450 ohm open wire line or feed direct
with 50 ohm coax. Due to the layout of my yard it would be preferable
that I feed the antenna at the mid point of one side of the antenna
with 450 ohm open wire line to a tuner (4:1 balun included in the line
and coax to the tuner). Is there any disadvantage in feeding the loop
mid way along one leg rather than at a corner?

any assistance greatly appreciated
Mike
VK3XL




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VK3XL