[Elecraft] RF in the Trees [OT]

[Doug Person via Elecraft]

The best trick I've found in dealing with moving trees is running the 
line through a pulley down to a weight that is heavy enough to keep the 
things reasonably taught.  The trees can move all the want and the line 
just rides on the pulleys.

Doug -- K0DXV

On 6/25/14, 6:51 PM, Michael Walker wrote:
> I run the following antennas in some pretty serious forest, and I get great
> results with them all:
>
>
>     - 160M Inverted L with elevated radials over Pine trees.  The tree is
>     about 90ft tall and then the insulated wire loops over a branch
>     - 80M Vertical also will elevated radials (the rope goes over a branch
>     at 90ft)
>     - 80M V with the apex at 70ft over a single Pine tree
>     - 132ft Windom supported at both ends with a center support over
>     hardwood trees at 60ft.
>
> In all cases, you have to be created to allow for flex as the wind blows.
>   It has taken some trial and effort, but you'll figure it out by watching
> things move.  Yes, you'll break it a few times, but eventually you'll come
> up with a solution.
>
> The worst case for moving resonance is the Windom, but that is easy to deal
> with.
>
> The 160M vertical varies is resonance point, but that is due to the ground
> conductivity changing from winter to summer.
>
> As I mentioned earlier, just do it.  It will work.
>
> I have used both air cannons and my quad copters to drop my lines in place.
>
>
> Mike va3mw
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