On Sat,2/13/2016 3:43 PM, Phil Kane wrote:
Does anyone use the strong-link / weak link system that is common in
shipboard wire antenna installations? This prevents the antenna wire
breaking in the event of severe storms.
Most of us with wires in trees use a weight and pulley system. Those who
Yep. I do, but then like you I've worked on many shipboard systems.
Also I'm old enough not to consider it a thrill to go out in a mid-winter
storm to restore my wire!
73 Ron AC7AC
-Original Message-
On 2/11/2016 9:49 PM, Jim Brown wrote:
> You don't see it unless there's significant
On 2/11/2016 9:49 PM, Jim Brown wrote:
> You don't see it unless there's significant tension on it. My 80/40 fan
> dipoles are up 140 ft and are fed with RG11. The tensioning weight is
> about 95#. I must trim it every 2-3 years.
Does anyone use the strong-link / weak link system that is common i
I should have mentioned in my earlier post that I use inverted vees
(picture a Maypole with fan dipole legs scattered around it) - which
means center supports holding up the feedline. That makes a light load
on the wires and much less stretching as opposed to supporting full
feedline weight wit
On Thu,2/11/2016 4:48 PM, Bill wrote:
If there is any stretch, I have not seen it
You don't see it unless there's significant tension on it. My 80/40 fan
dipoles are up 140 ft and are fed with RG11. The tensioning weight is
about 95#. I must trim it every 2-3 years.
73, Jim K9YC
_
Short runs - that being under 65 feet - I make with stranded #12 using a
PE UV-safe insulation. I used to use all kinds of the flavor of the week
of proper antenna wire. I have never had a 75 meter dipole using any
kind of #12 wire break from a weather induced load (ice/snow). I do not
use anyt
-boun...@mailman.qth.net] On
Behalf Of Jim Hoge
Sent: Thursday, February 11, 2016 5:58 PM
To: Elecraft Reflector
Subject: [Elecraft] how much to stretch copper
wire
I drew the wire for my first antenna about 40
years ago. That was for a quad utilizing solid
copper. Since then,I have made numerous dipoles,
all
I drew the wire for my first antenna about 40 years ago. That was for a quad
utilizing solid copper. Since then,I have made numerous dipoles, all using
stranded THHN or THWN 12g wire. My method has always been to anchor one end to
a tree or a bumper hitch and hold the free end with a pair of Vis
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