A 20' long rectangle 2 inches wide has slightly less square area than a
2' dish.
If your mount is comfortably holding a 2' dish then it ought to hold the
20' omni.
Not engineering advice, just an observation about geometry.
-Adam
On 8/16/2018 4:51 PM, Colin Stanners wrote:
So our amateur radio "Wi-Fi" (+similar protocols) group has gotten
access to the roof of a large building where we plan to install mounts
outside the walls of the concrete-walled elevator shack for our
smaller antennas.
We have heavy-duty mounts -
http://www.ventevinfra.com/shop/files/products/towers--site-hardwareb/mounting-solutions/Universal%20Wall%20Mount%20Series.pdf
<http://www.ventevinfra.com/shop/files/products/towers--site-hardwareb/mounting-solutions/Universal%20Wall%20Mount%20Series.pdf>
- and I've done this quite a bit at work for smaller antennas (1ft-2ft
dishes). But at this site we have another ham group that wishes to
install a massive antenna, a 20ft long vertical omni.
Does anyone know if having the above pair of mounts lag-bolted (2
inches deep?) into concrete is strong enough to guarantee no issues
with that huge antenna, or would we need to drill through the concrete
and put a plate on the other side instead?
--
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