I am considering a horizontal loop antenna that would be "squarish"
(depending on tree locations) and about 400' in circumference. My
(automatic) tuner is located in my garage (with 100' of coax going to
the shack in the house). The lead wires for the antenna and ground
are short and direct through the garage wall - I don't envision any
feedline from tuner to the wire loop. I don't want to use a balun
since there isn't really any feedline to balance and the impedances
presented to the balun would be all over the (Smith) chart. Would it
make sense to feed one end of the loop from the tuner and connect the
other loop end to the ground connection near the tuner or just leave
it open (essentially a square longwire antenna)? I would also have
three counterpoise wires following the loop lying on the surface of
the ground. The articles that I can find all use openwire feedlines
and balanced tuners (or baluns) but that arrangement doesn't fit my
situation. Thanks W0BF