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Re: [TowerTalk] Tree mounting yagi

Subject: Re: [TowerTalk] Tree mounting yagi
From: Krishna Kanakasapapathi <>
Date: Wed, 24 Jan 2007 09:19:43 -0500
List-post: <>
Excellent advice Steve.
Would it be better to use an appropriate through bolt/nut to ensure that it 
does not come off
over time.?
Would the tree need any kind of treatment just to prevent soft wood like pine 
in a few years due to the wound.
Once the tree is topped, how do you get to the top to rig the rotor/beam? Do 
you use a crane
with a bucket.? Sounds really adventurous as compared to climbing towers. :)

w4vku wrote:

> In a message dated 1/23/2007 11:33:46 A.M. Central America Standard ,
> writes:
> >  Any guidelines for using trees?
> >  I have a  cabin I use at about 7000' el with a clear North 180 degree shot
> of
> the  ridgetop, there are too many trees to get much up, I am planning on
> hauling my 2 el Steppir up to around 35' BETWEEN two trees. I will use a
> tagline for "rotation". Since I can't get to the tops of these pine trees,  I
> think this is my best option.
> >  Any ideas, comments,  things to watch for?
>     I top the tree and then mount a 1.5" water pipe  vertically with a
> horizontal piece welded near the top of the pipe  for torque resistance. Two 
> lag
> screws on the horizontal piece and 2-3 on the  vertical pipe and you're ready 
> to
> go.
>     The rotator is mast-mounted ala' TailTwister,  etc. A tree-mount is for a
> smaller - e.g. 3L tribander or so - antenna.  I've installed bigger ones like
> a KT34XA, but that's pushing it.
>     I use a tram technique to get the antenna up to  the top of the tree.
> With some timely tag line maneuvers you can pull the  elements down towards 
> you
> and then the element ends towards the tree will  clear the top branches and 
> the
> antenna will settle in position for  attaching to the mast.
>     I use nails as cable stand-offs and attach them  with tie wraps.
>     A tree mounted yagi requires more maintenance  because of limb growth but
> the antennas play like gangbusters since  electrically they're floating in
> space.
>     The best parts are that the tree is free and they  are unregulated for
> antenna installations. If you've got one, use it!
> Cheers,
> Steve    K7LXC
> Cell: 206-890-4188
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