Actually, doubling the BOOM LENGTH gives you about 2.5 dB increase. It could
have any number of elements on it. I like the beams with long-spaced
elements mainly because they are lighter and faster to assemble when you
transport them to a portable location disassembled. I've spent a lot of time
with Yagi Optimizer trying to get the best designs for the fewest elements
for various Yagis.
73, Zack W9SZ
On Thu, Oct 29, 2009 at 2:45 PM, Tom W2MN <w2mn@earthlink.net> wrote:
> General rule of thumb (estimate without a lot of calculations) is that
> doubling the number of elements will give you somewhere around 2.5 dB
> increased gain. So, cutting that 19 element down to around 9 or 10 elements
> should reduce the claimed original gain down about 2 dB. Of course the
> front
> lobe will be opened up too (sometimes a good thing).
>
> Tom W2MN
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