Hi Wolfgang,
A radiator with a relatively small active length should more or less have a
spherical pattern.
It is a quite common misbelief that a small antenna (with one active element)
has a spherical pattern.
Just look at the Hertzian dipole.It has (nearly) the same pattern as a fullsize halfwave
dipole.
http://de.wikipedia.org/wiki/Hertzscher_Dipol
http://en.wikipedia.org/wiki/Dipole_antenna
Whereas lossy ground has a great influence on the pattern
EZNEC is a great tool for such questions.
73
Clemens
DL4RAJ
----- Original Message -----
From: "Wolf Ostwald" <[email protected]>
To: <[email protected]>
Sent: Friday, June 11, 2010 1:36 PM
Subject: LF: move from loop to loaded aerial
Hello group !
After all the efforts, with a reasonable large loop, seem to be to no avail,
I am going to move to a loaded radiator. Either vertical or longwire. A
radiator with a relatively small active length should more or less have a
spherical pattern. Hence the geometrical orientation, may it be vertical or
horizontal, should not have a big effect on the spherical pattern. Is this
assumption rite or not ?
A horizontal span could be easier be longer than a vertical one.
I am not talking about a large structure like Stefan`s kite, I am talking
about a more "average ham`s "-antenna like a 25m vertical, which can stay
put for frequent testing and experiments. Any ideas about this ?
73 de wolf
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