Date: Sat, 14 May 2016 03:08:04 -0400
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] PL259 Cobbectors Part 2 - Murray W9EHQ
Yes and it does!
Liquid electrical tape is about the only thing that works and stays. I
will be using it where the matching coax ts soldered in on the C3i
antennas. I was really surprised to find the solder joints gone on the
144 and 440 antennas.
Epoxy works, but it deteriorates over a few years where the outer layer
of the liquid tape only dulls a bit, which I believe is due to dust
settling or "stuff" in the rain. At-any-rate the liquid tape remains
viable as long as I've had it up so far. (Not quite 12 years)
(bottom photo on link) http://www.rogerhalstead.com/ham_files/tower.htm
Click on photos for a larger view.
Unfortunately I have no current photos as that is now near the top of
the tower that I can no longer climb. I might give the 500mm telephoto
lens a try.
I'm going to add a common mode choke of 8 turns of RG-400 on 7 cores as
it is an end fed quarter wave fed against the tower. I've been thinking
about a number of coils in a box switched in at the feed point to add
length, so I can switch the resonant point down. I believe that will be
more efficient than just a tuner in the den, or shop.
73 es thanks.
Roger (K8RI)
## a c3i is a 6m yagi. On any of these f12 yagis, or similar, I use
10 ga silver stranded teflon wire, with heavy duty crimp lugs, for the
10-24 machine screws going through them. After crimping them, I also solder
them.
The completed lug then resides between 2 x SS flat washers, with a
split ring ss lockwasher outboard of that, then a pair of SS nuts outboard
of that. Then put what ever goop you want on the hard ware.
## Im not fond of using SS hardware for ant connections to an AL DE.
Phosphor bronze hardware is what the big boys all use in the commercial world,
for their 1-300 kw HF AM SW arrays. SS will turn black if you put enough
current through it.
Jim VE7RF
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