{"id":3174,"date":"2018-07-30T07:24:22","date_gmt":"2018-07-30T06:24:22","guid":{"rendered":"http:\/\/www.dj5ar.de\/?p=3174"},"modified":"2018-10-22T21:02:38","modified_gmt":"2018-10-22T20:02:38","slug":"new-beacon-sr1kol-in-jo74se","status":"publish","type":"post","link":"https:\/\/dj5ar.de\/?p=3174","title":{"rendered":"New Beacon SR1KOL in JO74SE"},"content":{"rendered":"<h4>July 30th, 2018<\/h4>\n<p>After I noticed some spots for SR1KOL in JO74SE on 1296.960 MHz, I monitored the frequency using WSJT-X Wide Graph. About 400 Hz below the nominal frequency traces of a F1 signal can be seen, when airplanes cross the path to the beacon. The signal is not audible, but I am pretty sure, it is SR1KOL.<\/p>\n<div id=\"attachment_3175\" style=\"width: 717px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-28-08_01-SR1KOL.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3175\" class=\"wp-image-3175 size-full\" src=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-28-08_01-SR1KOL.png\" alt=\"\" width=\"707\" height=\"556\" srcset=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-28-08_01-SR1KOL.png 707w, https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-28-08_01-SR1KOL-300x236.png 300w, https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-28-08_01-SR1KOL-624x491.png 624w\" sizes=\"auto, (max-width: 707px) 100vw, 707px\" \/><\/a><p id=\"caption-attachment-3175\" class=\"wp-caption-text\">Traces of SR1KOL in JO74SE, &#8220;1000&#8221; = 1296.960 MHz. The strong signal at the very left is a birdie.<\/p><\/div>\n<p>Some information can be found on the website of <a href=\"https:\/\/pk-ukf.org.pl\/news.php\">Polski Klub UKF<\/a>: It is located on a high rise building in Ko\u0142obrzeg, 40 m above ground. The power is 3 W into a slot antenna. Beacon keeper is Andrzej, SQ1GU.<\/p>\n<p><iframe loading=\"lazy\" title=\"2018 07 27 16 35 SR1KOL 23 cm via A380\" width=\"625\" height=\"352\" src=\"https:\/\/www.youtube.com\/embed\/GgAWgVgO300?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><em>The video shows an A380 crossing the path between DJ5AR and SR1KOL. At minute 2:00 the plane crosses the first time and at minute 4:00 after a turn it crosses a second time. Mind the traces at 580 Hz in the waterfall diagram. The 1000 Hz mark corresponds to 1296.960 MHz.<\/em><\/p>\n<p>Irek, SP5MX, who was involved in building the beacon and who repaired it recently, told me, the beacons reference is an OCXO withtout any GPS-lock. So possibly the beacon may transmit 400 Hz lower than defined.<\/p>\n<p><a href=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3185\" src=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL.png\" alt=\"\" width=\"1769\" height=\"652\" srcset=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL.png 1769w, https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL-300x111.png 300w, https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL-768x283.png 768w, https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL-1024x377.png 1024w, https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL-624x230.png 624w\" sizes=\"auto, (max-width: 1769px) 100vw, 1769px\" \/><\/a><em>At least in the morning of July 31st audible reflections could be heard via an Airbus A330. This time the 1000 Hz mark correspondents to 1296.9596 MHz.<\/em><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-3174-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL.mp3?_=1\" \/><a href=\"https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL.mp3\">https:\/\/dj5ar.de\/wp-content\/uploads\/2018\/07\/2018-07-31-10-33-SR1KOL.mp3<\/a><\/audio>\n<p><em>After 10 seconds the noise becomes a kind of &#8216;musical&#8217;. Another 10 seconds later experienced ears can hear the tone.<\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>July 30th, 2018 After I noticed some spots for SR1KOL in JO74SE on 1296.960 MHz, I monitored the frequency using WSJT-X Wide Graph. About 400 Hz below the nominal frequency [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[170,171],"tags":[30,28,34,47,208],"class_list":["post-3174","post","type-post","status-publish","format-standard","hentry","category-aircraftscatter","category-beacons","tag-1296-mhz","tag-23-cm","tag-aircraft-scatter","tag-beacons","tag-sr1kol"],"_links":{"self":[{"href":"https:\/\/dj5ar.de\/index.php?rest_route=\/wp\/v2\/posts\/3174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dj5ar.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dj5ar.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dj5ar.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/dj5ar.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3174"}],"version-history":[{"count":8,"href":"https:\/\/dj5ar.de\/index.php?rest_route=\/wp\/v2\/posts\/3174\/revisions"}],"predecessor-version":[{"id":3187,"href":"https:\/\/dj5ar.de\/index.php?rest_route=\/wp\/v2\/posts\/3174\/revisions\/3187"}],"wp:attachment":[{"href":"https:\/\/dj5ar.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dj5ar.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dj5ar.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}