[TowerTalk] Non-Conductive Mast Section

Adam Shirley WJ4X wj4x at amsat.org
Thu Dec 8 12:37:04 PST 2011


I side mounted a 13B2 vertically polarized. Just don't pass the mast
through the beam. It'll work just fine.

73!
 -Adam
  WJ4X

On 12/8/2011 1:44 PM, Jim Brown wrote:
> I want to side-mount a vertically polarized long boom 2M Yagi onto Rohn 
> 25 or Rohn  35 (slightly larger gauge, made for Motorola, that's not the 
> official designation). I may or may not put it on a rotator, and at 
> first will lock it down in the direction of the local DX club repeater. 
> I have another one of the same antenna that I'll mount horizontally.
> 
> What I'm looking for are:
> 
> 1) An insulated mast section, as recommended by the mfr (KLM) for 
> vertical mounting
> 
> 2) Some sort of suitable stand-off hardware or improvised method of doing it
> 
> 3) Other hardware to make it work
> 
> One idea I've toyed with is even more primative -- bolt a horizontally 
> oriented 5 ft section of 2-in mast to the tower cross-braces, and bolt 
> the antenna to it. This way I don't need an insulated section,but I've 
> got to be quite careful about the orientation of the horizontal piece, 
> since it (alone) determines the antenna azimuth.  I've got the 5 ft 
> section of 2-in, but no suitable mounting hardware.
> 
> Thoughts?
> 
> 73, Jim K9YC
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