Topband: Corner insulator of Inverted L

[Jim Brown]

On 9/25/2021 10:19 AM, Mike Smith VE9AA wrote:
> For a little better access, I could've put the rope through a pulley, but
> ropes tend to last longer if just going over branches around here....or so
> it seems.  Ropes and wires through (cheap) pulleys tend to break them.

I've experienced exactly the opposite with wires rigged in my tall 
redwoods. Wires in these trees MUST be rigged with good pulleys and 
weights to allow for trees swaying in the wind -- without that, the 
first good wind will put those wires on the ground. My wires are rigged 
with the support rope tied down on one end and counterweighted on the 
other by about 95# of sand in a water bucket. I experienced that failure 
about ten years ago when I didn't rig that weight soon enough after the 
tree climber rigged the antenna. The wind came within a week or so, and 
the antenna ended up on the ground. In 15 years, with 6-8 wires rigged 
with pulleys and counterweight, I've had only one of them fall in a storm.

And here, rope rigged over a branch will eventually be worn through, 
dropping the antenna to the ground. This, of course, strongly depends on 
the trees, their structural characteristics, how high the antenna is 
rigged, and so on.

73, Jim K9YC