{"id":974,"date":"2017-01-08T17:52:04","date_gmt":"2017-01-08T15:52:04","guid":{"rendered":"http:\/\/ha3ln.hu\/?p=974"},"modified":"2022-06-10T21:32:00","modified_gmt":"2022-06-10T19:32:00","slug":"wind-stress-test","status":"publish","type":"post","link":"https:\/\/ha3ln.hu\/?p=974","title":{"rendered":"Wind stress test"},"content":{"rendered":"<p><!--more-->This year&#8217;s winter acts like a &#8220;winter&#8221;. It&#8217;s very cold, temp reached even -20 degrees which is very unusual in HA in the recent years, big snow fall and all this comes with strong winds. (yellow bar stands for max speed, green for average \/hour)<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20170106windspeed.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-975 aligncenter\" style=\"border: 1px solid black;\" title=\"20170106windspeed\" src=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20170106windspeed.png\" alt=\"\" width=\"518\" height=\"391\" srcset=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20170106windspeed.png 640w, https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20170106windspeed-300x225.png 300w\" sizes=\"(max-width: 518px) 100vw, 518px\" \/><\/a><\/p>\n<p>We had a very windy day on 6\/Jan which made the antennas struggle a bit. Luckily all of them survived but not without effect.<\/p>\n<p>There was similar windy weather couple of months ago which made the 10m Yagi a bit biased from the main direction:<\/p>\n<p style=\"text-align: left;\"><a href=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20161028_113456.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-982\" title=\"20161028_113456\" src=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20161028_113456.jpg\" alt=\"\" width=\"491\" height=\"655\" srcset=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20161028_113456.jpg 768w, https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20161028_113456-225x300.jpg 225w\" sizes=\"(max-width: 491px) 100vw, 491px\" \/><\/a>&#8230;but the recent wind sorted all again with a tiny little difference. It turned the 6el completely into &#8220;back&#8221;.<\/p>\n<p style=\"text-align: left;\"><a href=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20170109_132712.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-986\" title=\"20170109_132712\" src=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2017\/01\/20170109_132712.jpg\" alt=\"\" width=\"461\" height=\"819\" \/><\/a><\/p>\n<p style=\"text-align: left;\">When I planned the boom for this OWA I preferred the square shaped aluminum as it is easier to set the elements horizontal. Never thought that the wind load can be so high it can make this re-arrangement on the pole. It will be a nice exercise to reset them but I&#8217;m still very lucky as the antenna remained in one piece, stayed on the tower and does not have any visible damage.<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/posts\/974"}],"collection":[{"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=974"}],"version-history":[{"count":22,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/posts\/974\/revisions"}],"predecessor-version":[{"id":2540,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/posts\/974\/revisions\/2540"}],"wp:attachment":[{"href":"https:\/\/ha3ln.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}