That was a great article. I'm a huge fan of open wire also.
Last year I had a contractor doing some work in my side yard and he actually
tied back my open wire line to an aluminum gutter using plastic cable ties. I
did notice I had to re-tune one day, but the guys I talk to on 75 meters said
my signal had been as strong as usual! I didn't discover the tied down line
until a week later while checking out his work in the yard. Go figure.
Scott K4VWK
-----Original Message-----
>From: Rick - DJ0IP / NJ0IP <Rick@DJ0IP.de>
>Sent: Jul 29, 2013 4:54 AM
>To: 'Discussion of Ten-Tec Equipment' <tentec@contesting.com>
>Subject: [TenTec] OT: Openwire/Window Line and Bad Wx
>
>I extracted this topic from the other thread on the Model 238.
>
>How does bad weather affect openwire compared to its effect on window line?
>Lots of opinions, lots of myths.
>
>Bob Allison (WB1CGM) and Joel Hallas (W1ZR) tested this to find out.
>Their results are reported in the November 2009 issue of QST on page 66.
>See: http://www.dj0ip.de/spiderbeam-1/spiderpole/pole-base-mount/ and then
>select "W1ZR" as author and "2009" as year.
>Unfortunately you have to be a member of ARRL to download this and it is
>copyrighted, otherwise I would post the download on my web.
>
>Summary, for 95 ft. of feedline (the length they tested), the change is
>negligible in both.
>It is ever so slightly worse with window line, but less than 0.2dB.
>NEGLIGIBLE!
>
>The real difference is, true openwire changes it impedance only slightly
>when wet, whereas the window line changes more and generally requires
>re-tuning the matchbox.
>
>One word of caution, which should be obvious: Neither are suitable for
>running along the ground, whether wet or dry!
>
>Being an operwire fanatic, I personally found this to be one of the most
>useful articles ever published in QST.
>
>73
>Rick, DJ0IP
>
>
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