{"id":17569,"date":"2016-03-06T08:45:22","date_gmt":"2016-03-06T12:45:22","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=17569"},"modified":"2016-03-06T08:45:22","modified_gmt":"2016-03-06T12:45:22","slug":"playing-music-with-computer-emitted-interference","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2016\/03\/playing-music-with-computer-emitted-interference\/","title":{"rendered":"Playing music with computer-emitted interference"},"content":{"rendered":"<p><a href=\"http:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/03\/RFI-Sony-7600G.jpg\" rel=\"attachment wp-att-17634\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17634\" src=\"http:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/03\/RFI-Sony-7600G.jpg\" alt=\"RFI-Sony-7600G\" width=\"640\" height=\"326\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/03\/RFI-Sony-7600G.jpg 640w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/03\/RFI-Sony-7600G-300x153.jpg 300w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/03\/RFI-Sony-7600G-500x255.jpg 500w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><em>SWLing Post<\/em> reader, Chris Smolinski, writes:<\/p>\n<p style=\"padding-left: 30px;\"><em>Here&#8217;s my Mac Book Pro (2010 model) playing Mary Had A Little Lamb over the radio, by modulating the RFI (Radio Frequency Interference) produced by it and other computers. As picked up on a Sony 7600G receiver. I found the best reception was on the long wave band, although I could continue to hear it well above the AM (medium wave) band, past 1700 kHz. The signal was pretty much everywhere, no matter where I tuned, in 1 kHz steps.<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>Picking up radio emissions from computers is one method that can be used to spy on them.<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>I used the source code available here: <a href=\"https:\/\/github.com\/fulldecent\/system-bus-radio\" target=\"_blank\">https:\/\/github.com\/fulldecent\/system-bus-radio<\/a><\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>If you want to see some radio related software I&#8217;ve written, please visit <a href=\"http:\/\/www.blackcatsystems.com\" target=\"_blank\">http:\/\/www.blackcatsystems.com<\/a><\/em><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"625\" height=\"352\" src=\"https:\/\/www.youtube.com\/embed\/l8AYHnF8ZrA?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en-US&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/watch?v=l8AYHnF8ZrA&amp;feature=youtu.be\" target=\"_blank\">Click here to view on YouTube.<\/a><\/p>\n<p style=\"text-align: left;\">That is fascinating, Chris. While I was well aware that computers and mobile devices (of all stripes) produce RFI, I had no idea that it could be used for spying. I love how you&#8217;ve manipulated this interference to play a tune! What a creative\u00a0hack!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SWLing Post reader, Chris Smolinski, writes: Here&#8217;s my Mac Book Pro (2010 model) playing Mary Had A Little Lamb over the radio, by modulating the RFI (Radio Frequency Interference) produced by it and other computers. As picked up on a Sony 7600G receiver. I found the best reception was on the long wave band, although [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[460,627,3,196,43],"tags":[2732,2315,2651,453,2781],"class_list":["post-17569","post","type-post","status-publish","format-standard","hentry","category-funny","category-how-to","category-news","category-qrm","category-shortwave-radio","tag-black-cat-systems","tag-chris-smolinski","tag-radio-frequency-interference","tag-rfi","tag-sony-icf-sw7600g"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-4zn","jetpack-related-posts":[{"id":22675,"url":"https:\/\/swling.com\/blog\/2016\/12\/chris-tracks-down-sources-of-radio-noise\/","url_meta":{"origin":17569,"position":0},"title":"Chris tracks down sources of radio noise","author":"Thomas","date":"December 6, 2016","format":false,"excerpt":"Many thanks to SWLing Post contributor, Chris Smolinski, who shares this guest post from his blog, RadioHobbyist.org: Yet Another !&*%$! Noise Source by Chris Smolinski The past few days, I have noticed higher than usual noise levels, generally on the lower frequencies, and particularly on the longwave band, including the\u2026","rel":"","context":"In &quot;Ham Radio&quot;","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"spectrum-waterfall-sdr","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/Spectrum-Waterfall-SDR.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/Spectrum-Waterfall-SDR.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/Spectrum-Waterfall-SDR.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":30760,"url":"https:\/\/swling.com\/blog\/2018\/02\/can-you-help-luke-identify-this-radio-noise\/","url_meta":{"origin":17569,"position":1},"title":"Can you help Luke identify this radio noise?","author":"Thomas","date":"February 6, 2018","format":false,"excerpt":"Many thanks to SWLing Post contributor, Luke Perry, who writes: I am experiencing a issue with my shortwave reception at my part-time home. I have been helping out my mother so I have brought over my Sony portable, along with the Sony active antenna. I have a constant \u2018clicking\u2019 sound\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/02\/Sony-SW100-Dial-6160-Loomish.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/02\/Sony-SW100-Dial-6160-Loomish.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/02\/Sony-SW100-Dial-6160-Loomish.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/02\/Sony-SW100-Dial-6160-Loomish.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":51771,"url":"https:\/\/swling.com\/blog\/2022\/02\/radio-waves-bbc-license-fee-frozen-battling-rfi-warning-to-rtl-sdr-users-in-ukraine-and-wrd-special-broadcast\/","url_meta":{"origin":17569,"position":2},"title":"Radio Waves: BBC License Fee Frozen, Battling RFI, Warning to RTL-SDR Users in Ukraine, and WRD Special Broadcast","author":"Thomas","date":"February 4, 2022","format":false,"excerpt":"Radio Waves:\u00a0 Stories Making Waves in the World of Radio Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest\u00a0SWLing Post\u00a0readers.\u00a0 To that end:\u00a0Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a\u2026","rel":"","context":"In &quot;Broadcasters&quot;","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/04\/Braun-T1000CD-Front-Dial-e1554814225364.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/04\/Braun-T1000CD-Front-Dial-e1554814225364.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/04\/Braun-T1000CD-Front-Dial-e1554814225364.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/04\/Braun-T1000CD-Front-Dial-e1554814225364.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":45271,"url":"https:\/\/swling.com\/blog\/2020\/09\/cant-receive-anything-on-your-new-shortwave-radio-read-this\/","url_meta":{"origin":17569,"position":3},"title":"Can&#8217;t receive anything on your new shortwave radio&#8211;? Read this.","author":"Thomas","date":"September 10, 2020","format":false,"excerpt":"This morning, I received a question from Andrew, an SWLing Post reader in the UK.\u00a0 Andrew writes: May I ask a question please? I am very much a newbie to this. I am not really interested in FM, but I would like to listen to international stations on SW, utilities\u2026","rel":"","context":"In &quot;AM&quot;","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/05\/PL-680-BBC-Click-Frequency.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/05\/PL-680-BBC-Click-Frequency.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/05\/PL-680-BBC-Click-Frequency.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/05\/PL-680-BBC-Click-Frequency.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":31031,"url":"https:\/\/swling.com\/blog\/2018\/03\/guest-post-listening-to-pirate-radio-stations-from-south-america\/","url_meta":{"origin":17569,"position":4},"title":"Guest Post: Listening To Pirate Radio Stations from South America","author":"Thomas","date":"March 6, 2018","format":false,"excerpt":"Many thanks to SWLing Post contributor, Chris Smolinski, who shares the following guest post. Note that this post has also been published on Chris' excellent blog, Radiohobbyist.org: \u00a0 Listening To Pirate Radio Stations from South America by Chris Smolinski Looking for a new DX challenge? In addition to shortwave pirate\u2026","rel":"","context":"In &quot;Guest Posts&quot;","block_context":{"text":"Guest Posts","link":"https:\/\/swling.com\/blog\/category\/guest-posts\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/DhcQKXh-e1520339222291.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":45798,"url":"https:\/\/swling.com\/blog\/2020\/10\/steve-tracks-down-the-source-of-persistent-radio-interference-and-gets-it-addressed\/","url_meta":{"origin":17569,"position":5},"title":"Steve tracks down the source of persistent radio interference and gets it addressed","author":"Thomas","date":"October 7, 2020","format":false,"excerpt":"Many thanks to SWLing Post contributor, Steve Allen (KZ4TN), who shares the following guest post: Tracking Down Radio Frequency Interference by Steve Allen, KZ4TN I first noticed the RFI in late November 2019 as a steady buzz at around S9. It was present over most of the high frequency spectrum.\u2026","rel":"","context":"In &quot;Ham Radio&quot;","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/10\/power-substation-e1602004330569.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/10\/power-substation-e1602004330569.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/10\/power-substation-e1602004330569.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/10\/power-substation-e1602004330569.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/17569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=17569"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/17569\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=17569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=17569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=17569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}