On 8/19/2012 10:08 AM, K7LXC@aol.com wrote:
> I'll second that. Cables run inside a tower get some sort of Farraday
> cage effect. Is it real and effective? I don't know.
Skin effect causes RF current to flow on the outer surface of a
conductor, so cables run inside a tower will carry less RF current than
cables run outside the tower. That said, there can be some inductive
coupling between a tower leg carrying current and cable taped to it.
> It is a real pain. I much prefer cables outside the leg - easy to install
> and easy to replace (well, relatively easy anyway).
My neighbor, K6XX, who does a fair amount of tower work and does all of
mine, thinks otherwise. The initial install of my tower was LDF4-50,
taped to the inside of one leg, and it went up quite easily. I've
recently acquired some 7/8-in hard line, and plan to install it the next
free weekend. He says it's easy to do.
73, Jim K9YC
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