Happy New Year, I think N7WS has shown that when that window transmission line gets wet, its loss goes way up. So some of the change you are seeing in rain/snow conditions could be due to this higher loss.
Al W6LX/4 > > My experience with antenna's changing due to moisture is with my > balanced center fed wire which uses window line for the feed. It > accumulates moisture, frost, rain, snow, and ice. The change I do see > is due to the velocity change of the balanced feed. My measurements of > a couple of years back indicated the length of the line changed > electrically thus a velocity factor change. Any loss, wet or dry, under > matched conditions was not measurable over a length of 100 ft on 20M. > Therefore, I would expect the mis-matched loss to be about as the book > say. Again, either wet or dry. > > 73 > > Bob, K4TAX > ______________________________________________________________ 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 Message delivered to [email protected]
