[TowerTalk] Hardline ?

Rick Karlquist richard at karlquist.com
Mon Apr 20 16:57:33 PDT 2009


For solid polyethylene dielectric, 50 ohms is near the minimum
loss point.

Rick N6RK


Paul Christensen wrote:
> The arithmetic mean between 30-ohms (best power handling) and 77-ohms
> (lowest loss) is 53.5, the geometric mean is 48 ohms. The historical
> choice
> of 50-ohms represents a compromise between maximizing power handling
> capability while minimizing loss per unit length, for air-dielectric
> coaxial
> lines.
>
> Paul, W9AC




More information about the TowerTalk mailing list