Based on my measurements and method I used to measure 100 ft of window
line, the loss in the line from dry to wet is frankly nil. However, the
wet line does show a velocity factory change, in effect an electrical
change in line length, and thus when connected to an antenna, will have
a small effect on the impedance at the station end of the line.
I really think and believe many comments and opinions regarding window
line, are more "old ham lore" not based on true and complete facts.
73
Bob, K4TAX
On 1/14/2022 12:26 PM, elecraft-requ...@mailman.qth.net wrote:
Message: 17
Date: Fri, 14 Jan 2022 11:26:13 -0700
From:ho13d...@gmail.com
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] [OT] Loss in window line [OPINION] [LONG]
Message-ID:<ca9fbf80-ba6d-4e4b-9af8-15c2d5791...@gmail.com>
Content-Type: text/plain; charset=us-ascii
I concur with the conclusion that water has little effect on window line. I
base this on my own experience using window line for years. I always feed it
into a tuner and, if water has any effect on the line, I have to adjust the
settings of the tuner. It is only necessary to adjust the tuner under very
heavy rain. Anything resembling a normal amount of water on the line has
essentially no effect, even after years of dirt buildup.
Years ago, when I had a swimming pool, I spanned the pool with a length of
underwater ladder line and made some simple measurements that indicated only a
nominal change. And pool water is purposely chlorinated, which increases the
conductivity, although I don't know by how much.
73 de dave
ab9ca
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