At 11:05 9/30/96 -0500, NO0Y wrote:
>Dan KL7Y makes a good point in his post
>regarding the T antenna having an over head
>null in it's radiation pattern. It is often
>overlooked that the quarter wave(or shorter)
>vertical is NOT an isotropic radiator.
This reminded me of a point that I meant to make
previously when someone said that an Inverted-L had
its maximum directivity in the direction of the top
loading wire. I had a 50 foot Inverted-L up the
first year I was here in NC and decided to model it
on Elnec to check the directivity. I found that the
pattern was maximized in the direction OPPOSITE to
the top loading wire. It was not a lot but on the
order of a dB or two. Every little bit helps!
73, Bill W0ZV
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