[TowerTalk] C3E over a metal roof

[n4kg@juno.com]

The effective height of an antenna is the difference
between it's elevation and the elevation at the
reflection point.  As long as the barn is not in 
the path to the reflection point at the angles of
interest (1 to 30 degrees below the horizon)
there should be no interference.  

I do not have a good feel for what coupling /
detuning there might be, but 20 ft is greater
than the element spacing so the parasitic 
elements will be the primary influence on
the driven element.

de  Tom  N4KG





On Mon, 11 Dec 2000 "Brian Smithson" <bsmithson@alventive.com> writes:
> A while back someone posted a question about a C3x over
> a metal roof and I was wondering what the consensus was.
> I have a C3E at about 35' pointing to EU and like it so
> much I thought I'd do the same on tower 2 for SA, but 
> the tower is right next to my metal barn. Even at 35' it
> would only be 20' or so above the metal barn.
> 
> Thoughts?
> 
> -Brian n8wrl
> 
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