On 7 Dec 2006 20:27:37 -0800, "
wrote:

Actually, maybe it doesn't have gain compared to a halo... I'm not
really sure... I have an inconclusive 6m Big Wheel EZNEC model with an
average gain problem... though at this point it's only showing a -0.5dB
average gain or so, and impedance and gain seem constant with
segmentation changes, so it's probably not so bad.

I made it back when I was considering building one and modified it a
little bit to make the avg. gain work out better.

Anyway, if anyone wants to try to get it to work reliably, there's a
model at

http://www.n3ox.net/projects/eznec/6mBigWheel.ez

Dan,

I changed your segmentation, W1=1, W8-W43=1, I get average
gain=0.05dB.

Are you sure that W1 should be 15"? That and the spacing of each pair
of conductors out the the ring gaps are going have a large influence
on feedpoint Z. Did you scale this from another frequency?

Owen

--

I changed your segmentation, W1=1, W8-W43=1, I get average
gain=0.05dB.


I used your segmentation and changed the spacing of the transmission
line sections to both 1 inch and 1.5 inches to be more realistic and
played with the transmission line segmentation and can't get better
than -1dB average gain with zero loss in free space.

What should I do