{"id":1337,"date":"2018-02-28T23:50:58","date_gmt":"2018-02-28T21:50:58","guid":{"rendered":"http:\/\/ha3ln.hu\/?p=1337"},"modified":"2022-06-10T21:32:11","modified_gmt":"2022-06-10T19:32:11","slug":"powerbreak-and-an-iceaga-experience","status":"publish","type":"post","link":"https:\/\/ha3ln.hu\/?p=1337","title":{"rendered":"Powerbreak&#8230;"},"content":{"rendered":"<p><!--more-->There was a power-break just before I wanted to switch off the gear. Everything went down only the laptop kept it on battery. I&#8217;m playing with an RTL-SDR dongle lately I had the idea to try how does the city sound like with no man-made noise at all.<\/p>\n<p>There is quite a difference&#8230; In according to HDSDR signal strength scale there is ~20dB lower noise floor compared to the &#8220;normal digital jam&#8221; when I can hear all the routers,\u00a0 switching power supplies, etc. too well. It is well visible that how many signals are hidden in the noise when the households are splattering.<\/p>\n<p style=\"text-align: center;\">&#8230;with&#8230;:<a href=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/03\/noise40m.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1338 aligncenter\" title=\"noise40m\" src=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/03\/noise40m.jpg\" alt=\"\" width=\"1024\" height=\"610\" srcset=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/03\/noise40m.jpg 1024w, https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/03\/noise40m-300x178.jpg 300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p style=\"text-align: center;\">&#8230;and without noise:<br \/>\n<a href=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/02\/nonoise40m.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1344\" title=\"nonoise40m\" src=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/02\/nonoise40m.jpg\" alt=\"\" width=\"1024\" height=\"610\" srcset=\"https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/02\/nonoise40m.jpg 1024w, https:\/\/ha3ln.hu\/wp-content\/uploads\/2018\/02\/nonoise40m-300x178.jpg 300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p style=\"text-align: center;\">&nbsp;<\/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\/1337"}],"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=1337"}],"version-history":[{"count":13,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/posts\/1337\/revisions"}],"predecessor-version":[{"id":2553,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=\/wp\/v2\/posts\/1337\/revisions\/2553"}],"wp:attachment":[{"href":"https:\/\/ha3ln.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1337"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ha3ln.hu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}