[TowerTalk] Looking for a light coaxial

[Jim Brown]

On 9/11/2020 5:50 PM, Artek Manuals wrote:
> Rather than have the coax hang down from the driven element have it go 
> back along the rope boom to the same tree that supports one end of the 
> rope boom then have it drop down along the tree. this way I suspect you 
> will support much less coax weight and the tree will do more of the work 
> so to speak. Then your are safe with RG213.

Mechanically that's a good solution, but very effective choking will be 
needed to prevent it from being a parasitic element. Definitely start 
with a serious choke at the feedpoint, then another along the line 
placed so that the length between the two chokes can't become a 
parasitic element. Build the model, and study currents on the feedline. 
They should be much smaller than currents on the elements, and you 
should not see any skewing of the pattern.

73, Jim K9YC