> They also sell #12 superweave, which has 259 strands, and is
> insulated with PE. I use this for antennas. It's great to work
> with, and very robust. Contemplating use of same for OWL...
> but would need to find spacers, to make it up.
>
> //Having worked with this stuff a lot, my impression is it's too flexible
> to make open wire line that would hold reasonably constant
> impedance...unless you used spacers maybe every inch or two, in which case
> you've approximated ladder line. -WB2WIK/6
>
> Then comes the questions about spacing/line impedance/visual and
> wind profiles. I've always wondered about losses in ladder line,
> where 20% of the line is solid PE spacer. What happens when this
> stuff is run at high vswr?
>
> //Ladder line works well under high SWR conditions. Loss in the line
> isn't from the dielectric. Almost all the loss in transmission line is
> Ohmic in nature, i.e., from the skin resistance of the conductors. The
> reason air-dielectric coaxial cable has less loss than solid dielectric
> coaxial cable isn't due to reduced dielectric loss; it's due to the
> reduced dielectric constant which allows the use of a much larger diameter
> center conductor to achieve the same impedance. The Ohmic (skin) loss of
> that conductor is the major contributor to attenuation in coaxial cable of
> any construction, so the larger it is, the better. -WB2WIK/6
>
> Jim/n2ea
>
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> any questions and ask for Sherman, W2FLA.
>
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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