"Boomer" napisal w wiadomosci
...


My 75 meter loop at 35 feet of height is not the best antenna in the
world, but it is the best I can do for height given my trees and property.
However, I listened to someone who knew more about antennas than myself
and he convinced me to change my window line feed to open wire. I got a
huge benefit in performance. It does not make sense to me that a plastic
dialectric is so much worse than air. Maybe it is the change from 450 ohms
to 600. But boy did that antenna start working better.

The both halves of your antenna work in each cycle as the radiator and next
as the counterpoise.
For the counterpoise the bare wire is better than the insulated.
S*