Hey, and it looks like you are really in 7-land, Wes!
OTOH, I'm the "real W7OX", live in a suburb of Los
Angeles and have not lived in 7-land (OR/WA) since
1960; farthest North was Palo Alto when I was at
Stanford 1963-65. But 20 years ago we considered
retiring to Portland very seriously, so I used the
Gates to get back my original call -- W7UOX -- and
then shorten it to W7OX.
I like having the call for old times sake. But I
do wish the prefixes had call area geographic
meaning as they did in olden days.
73, Phil W7OX
On 4/18/17 12:57 PM, Wes Stewart wrote:
I'm cursed. It's bad enough that I've worked (I
thought) several stations in DX pileups only to
later have the DX say, "Nope, we worked N6WS,
not N7WS". Now my work is attributed to him
too. (Just kidding Jim)
Actually, the article never appeared in QST.
Too technical; it went right to the Antenna
Compendium. And as a caveat, I never intended
the "wet" numbers to take on mythical
properties. Water most definitely negatively
affects ladder lines (or as our European friends
say, "chicken ladder line") but it's really
really difficult to quantify with precision.
I never did get around to testing the piece of
Wireman line that my friend Danny, K6MHE, sent
me that was covered in moss. Living among
Redwood trees is considerably different from
living among Saguaro Cactii.
Wes, the real N7WS
On 4/18/2017 10:37 AM, Jim Brown wrote:
On Tue,4/18/2017 10:10 AM, Guy Olinger K2AV wrote:
Then there is the loss based on number of
spacers and loss tangent of the spacer
material modifying the lesser air loss.
Below UHF, loss in transmission line is
virtually all due to copper losses unless the
dielectric material is wet or is otherwise made
conductive.
Quite a few years ago, N6WS did some excellent
work showing that losses in window line are
greatly increased when it is wet. His work was
published in QST and later included in Antenna
Compendium #6. It should be required reading
for anyone considering window line. He measured
four types of window line and some open wire
line he built himself. Putting some numbers to
it, Wes's measurements showed loss at 50 MHz
increased from about 0.4 dB/100 ft to more
almost 6 dB/100 ft when it was wet. The open
wire line showed no increased loss when wet.
73, Jim K9YC
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