[TowerTalk] Looking for a light coaxial

[Artek Manuals]

Jorge

Think about it from a slightly different perspective. I assume you have 
a "Rope Boom" stretched between two trees. 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.

I built a similar antenna years ago when I lived out west with some 100 
ft pine trees. I also added a coil at the center of both� the parasitic 
elements with a relays that shorted out the coil allowing one parasitic 
element to be a director (short out the coil)� and the other to be the 
reflector ( un-shorted coil ) . that way I could instantly reverse4 
directions 180 degrees

That being said I have used RG8X for years on the 80 and 160 at full 
power with no noticeable heating. At higher frequencies however I am 
back to RG213. Think of it this way, heating to some degree is a 
function of wire loss and dielectric loss. Both wire and dielectric 
losses decrease slightly as you go down in frequency thus you can use 
RG8X at lower frequencies with more power than you can on 10 meters.


Dave
NR1DX

On 9/11/2020 12:05 PM, Jorge Diez (CX6VM-CW5W) wrote:
> Hello
>
> I am looking for a 50 ohms legal limit coaxial, but a light one, for a 
> wire yagi
>
> I am using 213 hanging from DE, but it�s too heavy and stress too much 
> my rope boom
>
> Maybe a coaxial with center in aluminum? Or something lighter than cooper
>
> Thanks!
>
> 73,
> Jorge
> CX6VM/CW5W
>
>
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-- 
Dave Manuals at ArtekManuals.com www.ArtekManuals.com


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