Geoffrey Mackenzie-Kennedy wrote: > Sorry for an off-topic question. Does anyone have any information about the > dry vs wet characteristics of "450 ohm" ladder line? I have never used this > type of line, but I might have to use it for "mechanical" reasons to feed > another antenna now being built. I am told that its characteristics change > when wet from rain, but which characteristics change and by how much at HF. > A remote ATU to compensate is not to be used with this particular antenna / > feeder.
I don't have the quantitative data that Geoff wants, but my experience was that when feeding a 40-meter dipole with the stuff, the tuning changed significantly when it rained. I don't know what actually accounts for this. Some people have suggested that waxing the line reduces the effect. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ______________________________________________________________ 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
