My previous message on this topic was composed while I was in a doctor's office waiting on my fiancee. To gather some data on coax, I did some Google searching and found several "calculators" (that all seem to copy each other). Another thing they have in common is that they all use the data I derived for "window line" which was published in an ARRL Antenna Compendium article I wrote. All without attribution, of course :-).
--- On Tue, 4/16/13, Ron D'Eau Claire <[email protected]> wrote: From: Ron D'Eau Claire <[email protected]> Subject: Re: [Elecraft] KX3 remote transmitting To: [email protected] Date: Tuesday, April 16, 2013, 9:11 PM That's how the commercial HF stations did it. Keep in mind they used real ladder line and NOT "window line" that is frequently mislabeled "ladder line". True ladder line has large diameter conductors (usually No. 12 or larger wires) and only enough insulator bars separating them to keep the wires stable. That's compared to the window line that has a brown (polyethylene I believe) web between two much smaller wires with openings (windows) cut into the webbing. Window line works reasonably well, but does not have the stability and low losses of true ladder line, especially for long runs. One of its biggest drawbacks is that moisture, ice, snow, etc., can change its characteristics appreciably in spite of the windows. Ladder line does not suffer such changes unless it's buried in snow or iced over. 73 Ron AC7AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
