Date: Sat, 31 Dec 2016 20:55:15 -0800
From: Jim Brown <jim@audiosystemsgroup.com>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] UV and WX deterioration of THHN insulation,
and effects
Yes, it has nothing to do with the insulation. In an earlier post, I
noted that I every two years, I have to circumcise my 80/40 JA fan that
uses #10 stranded THHN for the 80M element. It's up about 130 ft, fed
with RG11, so a lot of tension on it. I've changed to wire on the other
80/40 fan to the bare #8 solid stretched to #9.
73, Jim K9YC
## I have not had any stretch issues with RW-90 in 10 gauge, but that was
for slopers and inverted vees etc, with no weight on them. The insulation on
RW-90 is very thick stuff. I have also used it in 8 gauge. 10 gauge
alumoweld
is stupid strong stuff, doesnt stretch.
### IF degraded THHN wire actually increases RF resistance, then the
input Z to the dipole, etc should also increase by a bunch.
Jim VE7RF
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|