[Elecraft] Output power being eaten

[Al Lorona]

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
>