Rob: I am currently running a 3 el gem quad and have a four element gem
quad hanging in the garage! I can tell you that what they recommend is to
restring with the same wire as comes with the unit. It is enamel number 18
or 20 soft drawn copper wire found at any motor rewinding shop in your town.
Anything other than the size they originally used will change the tuning
significantly as the velocity factor will be different. Also, if you can,
use 1/4 wave matching stubs on all three bands and performance will improve
and you will have a much lower swr than if you tie all three driven elements
to a single feedline as they show in the manual. Good luck and think you
will find it a top performer. Van, K7VS 337 current countries worked and
confirmed with only FR/G still needed and all with the Gem Quad!!
----- Original Message -----
From: "Rob Frohne" <frohro@wallawalla.edu>
To: "towertalk" <towertalk@contesting.com>
Sent: Wednesday, February 13, 2008 10:09 PM
Subject: [TowerTalk] Copper Clad or Hard Drawn Wire for Quad?
> Hi,
>
> I was given a broken Gem Quad, which I am attempting to splint together,
> and it needs all new wires. I'm wondering whether to use #14, 7 strand
> copper clad steel or #14, 7 strand hard drawn copper wire which may be
> more flexible. I'm also a little worried about galvanic action on the
> copper clad steel. But the steel seems like it would be stronger. What
> are the opinions here?
>
> Thanks & 73,
>
> Rob, KL7NA
>
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