In a message dated 96-06-19 12:37:36 EDT, you write:
<< While I was in the business for 12 year, we used the tramming system every
chance <we could. Often it was not possible, as you well know. I learned
alot with that <technique, but the most valuable lesson concerns its
limitations. With a large heavy <antenna, the stress on the tower is huge
and must be considered. Back guying is <always needed. I would hesitate
using the system for a 3 Element 40M beam or any <very large antenna. There
are better ways to deal with the monsters that are much <safer. I think the
tram scheme is great for modest antennas.
Very good advice which is covered in my article. I prefer a crane or
helicopter for big loads.
<I recall the day we used the tram for a 6el 20M monster. The pull up rope
was being <handled by a garden tractor. All went fine until the beam arrived
at the tower, but the <driver didn't know that and kept hauling---the tractor
noise was higher than the <screams.
And the drivers back was to the load I'll bet. A doubly unsafe
technique.
73, Steve K7LXC
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