[TowerTalk] Trees and Verticals

David Gilbert xdavid at cis-broadband.com
Wed Dec 28 16:32:18 PST 2011


Well, I can say with pretty good assurance that a wooden pole, wet or 
dry, doesn't affect the currents flowing through a surrounding aluminum 
tube.  The currents in the aluminum tube flow on the outside of it.

Whether or not a tree surrounded by a cage of wires an appreciable 
portion of a wavelength long behaves the same way depends, I guess, upon 
how well the cage of wires actually approximates a tube.  Why don't you 
model it as Jim Lux suggested and let us know?  If it acts like a tube 
it would likely be pretty efficient in spite of what I stated earlier.

Dave   AB7E




On 12/28/2011 2:14 PM, Dan Schaaf wrote:
> Let's go a step further,
> What happens if you put a dry wooden broomstick down the center of an
> aluminum tube vertical.
> Then a wet Broomstick.
>
> Best Regards
> Dan Schaaf
> K3ZXL www.k3zxl.com
>
> "Problems cannot be solved by the same level of thinking that created
> them." - Albert Einstein
>
>
> ----- Original Message -----
> From: "David Gilbert"<xdavid at cis-broadband.com>
> To:<towertalk at contesting.com>
> Sent: Wednesday, December 28, 2011 4:05 PM
> Subject: Re: [TowerTalk] Trees and Verticals
>
>


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