{"id":715,"date":"2018-07-15T21:08:06","date_gmt":"2018-07-15T20:08:06","guid":{"rendered":"http:\/\/www.sp3yor.net\/?p=715"},"modified":"2018-07-19T14:05:05","modified_gmt":"2018-07-19T13:05:05","slug":"dslwp-proby-odbioru","status":"publish","type":"post","link":"https:\/\/www.sp3yor.net\/?p=715","title":{"rendered":"DSLWP &#8211; pr\u00f3by odbioru"},"content":{"rendered":"<p>W drugiej po\u0142owie maja 2018, Chi\u0144czycy umie\u015bcili na orbicie Ksi\u0119\u017cyca dwa mikrosatelity (47 kilogram\u00f3w ka\u017cdy) w ramach misji DSLWP (<em>Discovering the Sky at Longest Wavelengths Pathfinder<\/em>).<\/p>\n<p>Detale odno\u015bnie misji zainteresowani bez problem\u00f3w odnajd\u0105 w internecie &#8211; natomiast faktem interesuj\u0105cym dla (ultra)kr\u00f3tkofalowc\u00f3w jest informacja, i\u017c orbitery wyposa\u017cone s\u0105 w nadajniki na pasmo 70cm. W weekendy, kiedy powa\u017cne dzia\u0142ania naukowe nie s\u0105 przeprowadzane, operatorzy uruchamiaj\u0105 na cz\u0119stotliwo\u015bci 435,400 lub 436,400 MHz beacon o mocy ok. 2W, nadaj\u0105cy emisj\u0105 JT4G &#8211; modulacja typu 4-FSK, kt\u00f3r\u0105 dekodowa\u0107 mo\u017cna za pomoc\u0105 oprogramowania WSJTX.<\/p>\n<p>Emisja JT4G jest dekodowalna przy wzgl\u0119dnie niskim stosunku sygna\u0142u do szumu, co oznacza, \u017ce w celu odbioru nie trzeba dysponowa\u0107 olbrzymim zestawem antenowym. Przeprowadzi\u0142em pr\u00f3b\u0119 odbioru ksi\u0119\u017cycowych transmisji u\u017cywaj\u0105c skromnej stacji, z\u0142o\u017conej z:<\/p>\n<ul>\n<li>anteny 16 el DK7ZB na pasmo 70cm (podzi\u0119kowania dla Grzegorza SO3AK),<\/li>\n<li>przedwzmacniacza SPF5189z,<\/li>\n<li>Yaesu FT-817.<\/li>\n<\/ul>\n<p>Sygna\u0142 odebrany o 19:51 czasu lokalnego (17:51 UTC) by\u0142 wyra\u017anie s\u0142yszalny na ucho &#8211; niestety z powodu braku kabla \u0142\u0105cz\u0105cego radio i komputer, nie uda\u0142o sie go zdekodowa\u0107. Daje to jednak spor\u0105 nadziej\u0119 na nast\u0119pne weekendy &#8211; przy takim stosunku sygna\u0142u do szumu, zdekodowanie nie powinno by\u0107 wi\u0119kszym problemem. Mam nadziej\u0119, \u017ce beacon b\u0119dzie jeszcze w\u0142\u0105czany, gdy ksi\u0119\u017cyc b\u0119dzie nad horyzontem w SP.<\/p>\n<p><a href=\"http:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKv2K8X0AEAEoA.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-722\" src=\"http:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKv2K8X0AEAEoA-768x1024.jpg\" alt=\"\" width=\"640\" height=\"853\" srcset=\"https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKv2K8X0AEAEoA-768x1024.jpg 768w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKv2K8X0AEAEoA-225x300.jpg 225w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKv2K8X0AEAEoA.jpg 900w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><a href=\"http:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKw7TFXcAA-mwV.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-723\" src=\"http:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKw7TFXcAA-mwV-1024x768.jpg\" alt=\"\" width=\"640\" height=\"480\" srcset=\"https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKw7TFXcAA-mwV-1024x768.jpg 1024w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKw7TFXcAA-mwV-300x225.jpg 300w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKw7TFXcAA-mwV-768x576.jpg 768w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/DiKw7TFXcAA-mwV.jpg 1200w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a>Update: Piotr SP5ULN zdekodowa\u0142 transmisj\u0119 z mojego nagrania \ud83d\ude42<\/p>\n<p><a href=\"http:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/6144537500_1531765485.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-724\" src=\"http:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/6144537500_1531765485-1024x879.jpg\" alt=\"\" width=\"640\" height=\"549\" srcset=\"https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/6144537500_1531765485-1024x879.jpg 1024w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/6144537500_1531765485-300x257.jpg 300w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/6144537500_1531765485-768x659.jpg 768w, https:\/\/www.sp3yor.net\/wp-content\/uploads\/2018\/07\/6144537500_1531765485.jpg 1184w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>W drugiej po\u0142owie maja 2018, Chi\u0144czycy umie\u015bcili na orbicie Ksi\u0119\u017cyca dwa mikrosatelity (47 kilogram\u00f3w ka\u017cdy) w ramach misji DSLWP (Discovering the Sky at Longest Wavelengths Pathfinder). Detale odno\u015bnie misji zainteresowani bez problem\u00f3w odnajd\u0105 w internecie &#8211; natomiast faktem interesuj\u0105cym dla &hellip; <a href=\"https:\/\/www.sp3yor.net\/?p=715\">Czytaj dalej <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-715","post","type-post","status-publish","format-standard","hentry","category-bez-kategorii"],"_links":{"self":[{"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=\/wp\/v2\/posts\/715","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=715"}],"version-history":[{"count":7,"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=\/wp\/v2\/posts\/715\/revisions"}],"predecessor-version":[{"id":799,"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=\/wp\/v2\/posts\/715\/revisions\/799"}],"wp:attachment":[{"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sp3yor.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}