Mark Beckwith wrote:
,> Where you may not be realizing your model is: The model probably allocates
power equally (50/50) between each vertical, right?
In real life when you feed it, the SWRs on the two verticals are different
because of the fact that there's a second energized vertical nearby having
some kind of effect on it, and each is being fed in parallel with something
else with a different length of coax, blah blah blah. Gets too complicated
for me, anyway.
This is the point at which my eyes usually glaze over. Better Men than I
will go further: basically the induced SWR means the power doesn't get split
50/50 - it becomes 60/40 or 70/30 or whatever - not 50/50. Anyhow, if you
plugged in some uneven amounts of energy at your sources in your computer
model, you will see a degradation of the pattern - like you are experiencing
in real life.
That´s why the Lewallen W7EL method should be used, as I4JMY pointed out
a while ago.
de SM2EKM
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