Errr, let me be a bit more specific...
The "beam width" of a quarter-wave has a very wide "acceptance ratio" and
grabs much more reflection from the ionosphere--a half-wave has a much
narrower beam width--it is a "quieter" antenna, but, grabs more of the
signal I am after...
At least, it appears like that...
A five-eights-wave has even a lower beam width--these three antennas,
because of length differences, exhibit differing reactances, when these
reactances are cancelled (such as using an L-Match) they become
"matched"--right?
Of course, this ignores conductor resistance, and takes for granted the
antenna is being fed at the proper point...
Regards,
John
"John Smith" wrote in message
...
Maybe I have a misunderstanding. I see a "mismatch" as being caused by
only two factors, either an uncompensated reactance--or, as Cecil
mentioned, feeding a bal/unbal antenna with the wrong feedline.
Indeed, any feedline can simply be analyzed as a series of lumped
reactances--inductive and capactitive.
How should I be viewing this?
Regards,
John
wrote in message
oups.com...
How does a mismatch affect the radiation pattern?
tnx .....
It doesn't. I don't consider unbalanced, the same as mismatched,
to answer Cecils question. Feedline radiation can effect the
pattern due to a lack of balun, etc, but thats not the same thing as an
impedance mismatch. Also...Antenna "loading" is not the same as
antenna "matching". Many short verticals need both...
MK
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