{"id":1436,"date":"2014-09-19T20:00:15","date_gmt":"2014-09-19T18:00:15","guid":{"rendered":"http:\/\/labalec.fr\/erwan\/?p=1436"},"modified":"2014-09-28T20:28:16","modified_gmt":"2014-09-28T18:28:16","slug":"sdr-as-in-software-defined-radio","status":"publish","type":"post","link":"https:\/\/labalec.fr\/erwan\/?p=1436","title":{"rendered":"SDR as in Software Defined Radio Part 1"},"content":{"rendered":"<p>Finally received my DVB-T\/DAB\/FM dongle and more precisely my R820T tuner.<\/p>\n<p>This, with the proper drivers (<a href=\"http:\/\/rtlsdr.org\/softwarewindows\" target=\"_blank\">here<\/a>), will allow me to \u00ab\u00a0listen\u00a0\u00bb to my RF433 radio devices.<\/p>\n<p><a href=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/sdrsharp.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/sdrsharp-1024x519.png\" alt=\"sdrsharp\" width=\"695\" height=\"352\" class=\"alignnone size-large wp-image-1437\" srcset=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/sdrsharp-1024x519.png 1024w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/sdrsharp-300x152.png 300w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/sdrsharp.png 1600w\" sizes=\"auto, (max-width: 695px) 100vw, 695px\" \/><\/a><\/p>\n<p>Even better I can record my signal in audacity using a \u00ab\u00a0<a href=\"http:\/\/en.wikipedia.org\/wiki\/Virtual_Audio_Cable\" target=\"_blank\">virtual audio cable<\/a>\u00ab\u00a0. (note that are free alternatives).<\/p>\n<p>Or else I can display my packets using <a href=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rtl_433_win32.zip\">rtl_433_win32<\/a> (although not decoded properly).<\/p>\n<p><a href=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rtl_433.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rtl_433-1024x519.png\" alt=\"rtl_433\" width=\"695\" height=\"352\" class=\"alignnone size-large wp-image-1440\" srcset=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rtl_433-1024x519.png 1024w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rtl_433-300x152.png 300w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rtl_433.png 1600w\" sizes=\"auto, (max-width: 695px) 100vw, 695px\" \/><\/a><\/p>\n<p>Note : ab 53 32 cb 54 d5 4b 2a 80 is a chacon remote control (to switch on\/off a 220v plug outlet).<\/p>\n<p>We can see in audacity the pattern repeated 5 times.<\/p>\n<p><a href=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity-300x109.png\" alt=\"rf433_Audacity\" width=\"300\" height=\"109\" class=\"alignnone size-medium wp-image-1453\" srcset=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity-300x109.png 300w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity-1024x373.png 1024w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity.png 1258w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Zooming in one pattern,  we can see high and low bits.<\/p>\n<p><a href=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity2.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity2-300x108.png\" alt=\"rf433_Audacity2\" width=\"300\" height=\"108\" class=\"alignnone size-medium wp-image-1454\" srcset=\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity2-300x108.png 300w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity2-1024x369.png 1024w, https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/rf433_Audacity2.png 1260w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Now the challenge is the following :<br \/>\n-snif a RF433 packet and decode it<br \/>\n-replay it with my Arduino+CC1101<\/p>\n<p>How fun \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Finally received my DVB-T\/DAB\/FM dongle and more precisely my R820T tuner. This, with the proper drivers (here), will allow me to \u00ab\u00a0listen\u00a0\u00bb to my RF433 radio devices. Even better I can record my signal in audacity using a \u00ab\u00a0virtual audio cable\u00ab\u00a0. (note that are free alternatives). Or else I can display my packets using rtl_433_win32 <a href='https:\/\/labalec.fr\/erwan\/?p=1436' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1436","post","type-post","status-publish","format-standard","hentry","category-arduino","category-18-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"_links":{"self":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1436"}],"version-history":[{"count":9,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1436\/revisions"}],"predecessor-version":[{"id":1487,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1436\/revisions\/1487"}],"wp:attachment":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}