[Elecraft] Ladder line changes when wet (was KAT500...)
Wes
wes_n7ws at triconet.org
Sun Jul 20 11:07:31 EDT 2025
I never said that:
A second measurement was then made after wetting the line with water to
simulate what might happen in a typical
outdoor application. Initially the water tended to bead up and run off,
making it difficult to make meaningful
measurements. I believe that a typical line used outdoors would quickly lose
its water shedding ability as it degrades
from sunlight and accumulates dust and other pollutants. To simulate this, I
added a wetting agent to the
water to create a water film on the surface. The results of this are
probably worst case and not something that
would necessarily be encountered in a typical installation...
As an aside, my late friend, Danny, K6MHE, sent me a piece of window line* that
had been used on one of his dipoles suspended in the redwood trees in Ft. Bragg,
CA. It had moss growing on it. This would not be a problem at my QTH in the
Sonoran Desert, especially considering that I would never use the stuff.
* I now prefer the term window line over ladder line, since the latter is used
for both true open wire and polyethylene insulated line.
On 7/19/2025 10:11 PM, Jack Brindle via Elecraft wrote:
> There is no discussion about the effects of that wetting agent other than a (questionable) general assumption that it had no effects.
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