FWIW, comments to consider about open wire feedline from my experience: Window line has shattered in the cold winter winds. Frost, snow, and ice easily accumulates. It catches the wind easily. On the plus side, window line conductors do not fold over on each other. Conductors stay evenly spaced.
Ladder line does require measures to keep conductors from twisting and folding over on each other. As Ron mentions, tension is necessary. Ladder line has less problems in inclement weather. Ladder line is much better in the wind. I designed my loop and ladder line so that I can melt ice off it. That would be more difficult to do with window line. Dick, n0ce On 12/28/2016 12:01 PM, Ron D'Eau Claire wrote: > Wes makes an excellent point: "window" line and open wire line are not the > same. Both the resistive losses in the relatively tiny wires in the window > line and the webs of insulation impact its performance as described in his > paper. > > My open wire line is homebrew, using #10 or #12 copper wire spaced with > common "dog bone" insulators sold for end insulators. They hold the wires > about 3 inches apart. Typically, one spacer every 3 or 4 feet is quite > adequate to maintain the spacing with the lines under tension. > > 73, Ron AC7AC > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
