Hi there. You had it right on the nose below when you said structural.
I am aware of the minute differences in radiating efficiency between a
wire and length of tubing. As these are going to be elevated verticals
my primary concern will be which bends over first in a 70-80 MPH line wind.
I still have standing one such vertical I made over 20 years ago that
has survived horrible wind storms. It is a hybrid just like what I
described....simple EMT and aluminum tubing. I was just wondering, since
I am starting from scratch if having larger dia tubing was a plus or a
minus when all the factors are considered. BTW the EMT and aluminum
tubing have about the same wall thickness (0.065" & 0.058").
Also regarding cost, my price to put two of these antennas together is
about half of the spider-beam pole which is why I am considering going
this route. TU very much for ur input.
Gedas, W8BYA
Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 1/1/2020 12:24 PM, Ignacy Misztal wrote:
So the design of the pole is for stability and ease of erection not
performance.
A very good choice for experimentation is spiderbeam 40ft pole. Seems
to last forever when attached at the bottom by bungee cords, without
guys. Costs a bit over $100.
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