Thanks for explain the diagram.
But now i have another doubt.
i have found on cebik home page an example of w8jk antenna.

You can seee at http://www.cebik.com/fdim/fdim9.pdf on page 6 and 7

in this project the full element is 44'(13.2m) but spacing is 22'
(6.6m)
So in this case the element is longher than 1/2wl ( i'm also reading
that the optimum is that the full element is from 1wl to 1.25wl, so
from 20m to 25m) and spacing is between 1/8 wl to 1/2wl.

What is the best choise?
If element is to short i may have very low impedence

On 10 Jan 2006 18:32:30 -0800, "ik7ytt" wrote:

Thanks for explain the diagram.
But now i have another doubt.
i have found on cebik home page an example of w8jk antenna.

You can seee at http://www.cebik.com/fdim/fdim9.pdf on page 6 and 7

in this project the full element is 44'(13.2m) but spacing is 22'
(6.6m)

Doesn't he say it is cut for the lowest frequency, and that is 30m or
10MHz) in Table 3?

So in this case the element is longher than 1/2wl ( i'm also reading
that the optimum is that the full element is from 1wl to 1.25wl, so
from 20m to 25m) and spacing is between 1/8 wl to 1/2wl.

What is the best choise?
If element is to short i may have very low impedence
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