Hi reflectees !
Although i dont have the technical background that Tom has, i want to
contribute a few findings from the experience of antenna building on other
lower frequency antennas.
I conducted tests on 30m and 40m verticals by comparing quarter and halfwave
radiators on the air.
In short words : the quarter wavers always were the winners !
I matched the ground mounted antennas with a parallel resonant circuit, like
Tom described. Very easy thing to do.
I could first not understand why the halfwave design was clearly edged by the
quarter wave design. But i found, that commercial installations never ever have
high impedance fed antennas close to the ground. That is not for safety
reasons, it must clearly be, because a strong electric field introduces strong
losses in nearby soil, which would be particularly true for ground mounted
antennas.
What say Tom ? Give us folks from "rookie town" a good lesson,hi. de wolf
df2py
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