What's the best way to refurb the spreaders with spar varnish ? I read that
somebody "dipped" the spreaders, but I can't envision that unless a real
long trough was used...
Alan, N3BJ
----- Original Message -----
From: "Ward Silver" <hwardsil@gmail.com>
To: "Towertalk Reflector" <towertalk@contesting.com>
Sent: Sunday, July 26, 2009 15:16
Subject: Re: [TowerTalk] Gem Quad Back in Production
I had a two-element Gem for nearly ten years and it worked very well in a
good location. Quads seem to do slightly better than Yagis at very low
angles - very important for low-power/QRP guys like me :-)
Anyway - the way I chose to feed the elements was with quarter-wave
sections of RG-62/U (92 ohms) to an RCS-8V, 5-position remote coax switch.
At the feedpoint, to keep the solid wire (both the elements and the coax
center conductor) from breaking, I used a small piece of glass-epoxy
perfboard with brass screw terminals and tie-wrapped the coax to it. All
of the coax feed lines were bundled together. The bundle was then tied
off to the central spider with nylon cord. That kept the whole assembly
relatively stable and I had no more coax or element breakage. SWR was
less than 1.5:1 on all five bands.
Bondo and a spare piece of fiberglass rod work well as an element repair
technique. Don't ask me how I know this :-)
73, Ward N0AX
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