{"id":49628,"date":"2021-07-18T07:30:28","date_gmt":"2021-07-18T11:30:28","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=49628"},"modified":"2021-07-18T07:30:28","modified_gmt":"2021-07-18T11:30:28","slug":"from-cuba-with-noise-massive-jamming-on-the-40-meter-band","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2021\/07\/from-cuba-with-noise-massive-jamming-on-the-40-meter-band\/","title":{"rendered":"From Cuba with noise? Massive jamming on the 40 meter band."},"content":{"rendered":"<p><strong>Many thanks to\u00a0<em>SWLing Post<\/em>\u00a0contributor,\u00a0<a href=\"https:\/\/swling.com\/blog\/tag\/13dka\/\" target=\"_blank\" rel=\"noopener\">13dka<\/a>, who shares the following guest post:<\/strong><\/p>\n<hr \/>\n<h1>Massive jamming on 40m (possibly from Cuba) is bugging the radio community<\/h1>\n<p style=\"text-align: right;\"><strong>by 13dka<\/strong><\/p>\n<p>Apparently this is going on for a week now on 40m:<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/20210717_012255.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-49630\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/20210717_012255.png\" alt=\"\" width=\"480\" height=\"272\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/20210717_012255.png 480w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/20210717_012255-300x170.png 300w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Spent last night at my beach listening post on the German North Sea coast and found this fairly strong signal and a 40m band mostly cleared of any other signals. As soon as I found out that it wasn&#8217;t something local, I was wondering who&#8217;s responsible for this mess again. It looks like Josh (<a href=\"https:\/\/youtu.be\/dtICIDDvnPw\" target=\"_blank\" rel=\"noopener\">&#8220;Ham Radio Crash Course&#8221; YouTube channel<\/a>) may have found a possible origin of that signal:<\/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\/dtICIDDvnPw?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>Here&#8217;s what it sounds like on each of the apparently manually controlled jamming channels:<\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-49628-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/Jammer_20210717_012345.mp3?_=1\" \/><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/Jammer_20210717_012345.mp3\">https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/Jammer_20210717_012345.mp3<\/a><\/audio>\n<p>Cuba would&#8217;ve probably been my last guess here on the other side of the big pond. \ud83d\ude42 In other words, they &#8211; whoever they are &#8211; jam the band for at least half of the world. Luckily 40m isn&#8217;t exactly a pleasure in most of the summer anyway but after having to suffer OTH radars, FHSS blips and politically motivated broadcasting with associated jamming on 40m for a long time, this is a new low. I don&#8217;t want to get all political here but trying to erect some electromagnetic fence around a country has never really worked out, it&#8217;s just a futile, at most temporarily effective and symbolic act, perceived as pointless and aggressive vandalism out of blank despair by the rest of the world.<\/p>\n<p>Ollie<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many thanks to\u00a0SWLing Post\u00a0contributor,\u00a013dka, who shares the following guest post: Massive jamming on 40m (possibly from Cuba) is bugging the radio community by 13dka Apparently this is going on for a week now on 40m: Spent last night at my beach listening post on the German North Sea coast and found this fairly strong signal [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"closed","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":[545,3,43],"tags":[6935,1800,9367,1549,1817],"class_list":["post-49628","post","type-post","status-publish","format-standard","hentry","category-ham-radio","category-news","category-shortwave-radio","tag-13dka","tag-cuba","tag-cuba-jamming","tag-jamming","tag-shortwave-radio-jamming"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-cUs","jetpack-related-posts":[{"id":49704,"url":"https:\/\/swling.com\/blog\/2021\/07\/radio-waves-20k-hz-the-buzzer-cuba-jamming-rugby-radio-station-soon-a-school-hro-opens-a-store-in-fl-police-use-morse-and-einstein-listened\/","url_meta":{"origin":49628,"position":0},"title":"Radio Waves: 20K Hz &#038; The Buzzer, Cuba Jamming, Rugby Radio Station soon a school, HRO Opens a store in FL, Police Use Morse, Tool Box Spy Radio, and &#8220;Einstein Listened&#8221;","author":"Thomas","date":"July 26, 2021","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;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\/2017\/07\/JRC-Dial.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":21926,"url":"https:\/\/swling.com\/blog\/2016\/10\/radio-eritrea-and-radio-ethiopia-jamming-intrudes-on-amateur-frequencies\/","url_meta":{"origin":49628,"position":1},"title":"Radio Eritrea and Radio Ethiopia jamming intrudes on amateur frequencies","author":"Thomas","date":"October 26, 2016","format":false,"excerpt":"Many thanks to SWLing Post contributor, Vlado (N3CZ), for sharing the following story from the South African Radio League newsletter: Broadcasters, jammers wreak havoc on amateur radio frequencies The ARRL reports the battle in the amateur radio 7 MHz band continues between Radio Eritrea and Radio Ethiopia, which is said\u2026","rel":"","context":"In &quot;Ham Radio&quot;","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"eritrea-ethiopia","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/10\/Eritrea-Ethiopia-1024x497.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/10\/Eritrea-Ethiopia-1024x497.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/10\/Eritrea-Ethiopia-1024x497.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":10779,"url":"https:\/\/swling.com\/blog\/2014\/09\/incredible-band-openings-tonight\/","url_meta":{"origin":49628,"position":2},"title":"Incredible band openings tonight","author":"Thomas","date":"September 10, 2014","format":false,"excerpt":"After an X class solar flare that caused a serious HF radio black-out earlier today, we've been rewarded with superb radio conditions this evening in North America. This is, perhaps, one of the best temporary band openings I've experienced this year. \u00a0Unfortunately, there's a good chance an incoming CME could\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"X1.6 Solar Flare, sunspot 2158 (source: Solar Ham)","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/09\/SolarFlare.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/09\/SolarFlare.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/09\/SolarFlare.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":6074,"url":"https:\/\/swling.com\/blog\/2013\/03\/bbc-world-service-program-discusses-chinese-jamming\/","url_meta":{"origin":49628,"position":3},"title":"BBC World Service program discusses Chinese jamming","author":"Thomas","date":"March 26, 2013","format":false,"excerpt":"In the latest episode of Over To You, host\u00a0Rajan Datar discusses how\u00a0the BBC World Service's shortwave transmissions are being affected by jamming in parts of Asia. It's a short but informative episode. Even Datar and his guest, Nigel Fry (Head of Distribution for BBC Global News), could appreciate the irony\u2026","rel":"","context":"In &quot;Broadcasters&quot;","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"BBCSWOverToYou","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2013\/03\/BBCSWOverToYou-300x96.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":39927,"url":"https:\/\/swling.com\/blog\/2019\/09\/carlos-questions-possible-radio-denge-welat-jamming\/","url_meta":{"origin":49628,"position":4},"title":"Carlos questions possible Radio Denge Welat jamming","author":"Thomas","date":"September 29, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Carlos Latuff, who writes: Greetings from Porto Alegre, Brazil. Yesterday I listened something unusual. On the shortwave band of 11.520 kHz, 11.525 kHz and then 11.530 kHz, this last the frequency of Kurdish Radio Denge Welat, it was broadcasting military songs from the times\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\/2019\/09\/11530-kHz-1024x574.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/09\/11530-kHz-1024x574.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/09\/11530-kHz-1024x574.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":5855,"url":"https:\/\/swling.com\/blog\/2013\/03\/australia-network-news-broadcast-group-condemns-china-over-radio-jamming\/","url_meta":{"origin":49628,"position":5},"title":"Australia Network News: Broadcast group condemns China over radio jamming","author":"Thomas","date":"March 9, 2013","format":false,"excerpt":"(Source: Australia News Network) An international broadcast association has condemned the deliberate jamming of shortwave broadcasts, including those from the ABC's Radio Australia service, into Asia. The Association for International Broadcasting (AIB) says English-language broadcasts from Radio Australia, the BBC World Service and the Voice of America are being jammed.\u2026","rel":"","context":"In &quot;Broadcasters&quot;","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"OHtower","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2011\/09\/OHtower-174x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49628","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=49628"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49628\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=49628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=49628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=49628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}