[TowerTalk] Balanced Transmission Line

[Grant Saviers]

73cnc.com has spacers that are slick.

Grant KZ1W

On 2/23/2018 16:02 PM, Riki, K7NJ wrote:
> I'm currently in the planning stage of replacing a very long length of coax
> with open wire line with appropriate transformers at each end.   So far,
> I've only been able to find 450 ohm line, commonly called "ladder line" that
> has a significant amount of dielectric material between the conductors.
> Because of expected UV degradation of the exposed dielectric, I would much
> rather use a line that had small rods as spacers.  I had seen such
> commercially available lines many years ago, but so far have not been able
> to find any online. Also, it could be advantageous to use a higher impedance
> line.  In summary, I would very much appreciate information about
> commercially available balanced line constructed to minimize UV degradation.
> Characteristic impedances (Zo) of 450 ohms and higher are all of interest.
> 73, Riki, K7NJ
>
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