{"id":49359,"date":"2021-06-23T22:00:03","date_gmt":"2021-06-24T02:00:03","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=49359"},"modified":"2021-06-22T07:53:43","modified_gmt":"2021-06-22T11:53:43","slug":"can-you-id-these-hf-transmissions","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2021\/06\/can-you-id-these-hf-transmissions\/","title":{"rendered":"Can you ID these HF transmissions?"},"content":{"rendered":"<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Right-Side.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-31424\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Right-Side.jpg\" alt=\"\" width=\"871\" height=\"659\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Right-Side.jpg 871w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Right-Side-300x227.jpg 300w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Right-Side-768x581.jpg 768w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Right-Side-624x472.jpg 624w\" sizes=\"auto, (max-width: 871px) 100vw, 871px\" \/><\/a><\/p>\n<p>Many thanks to SWLing Post contributor, Carlos Latuff, who shares the following <a href=\"https:\/\/youtu.be\/mSKPgKCvMNI\" target=\"_blank\" rel=\"noopener\">video<\/a> of sounds he heard on HF. Carlos adds, &#8220;<em>Are we in the Twilight Zone or Lost in Space? They sound like effects from a 60&#8217;s\/70&#8217;s sci-fi movie!<\/em>&#8221;<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" title=\"YouTube video player\" width=\"625\" height=\"352\" src=\"https:\/\/www.youtube.com\/embed\/mSKPgKCvMNI?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>Those sounds are wild! The stuff of <a href=\"https:\/\/swling.com\/blog\/2018\/05\/sound-designer-ben-burtt-reveals-radios-influence-in-star-wars-films\/\">Star Wars<\/a>.<\/p>\n<p>My only guess is that it&#8217;s a form of OTH RADAR? I&#8217;m sure an <em>SWLing Post<\/em> reader will sort this out in short order! Please comment!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many thanks to SWLing Post contributor, Carlos Latuff, who shares the following video of sounds he heard on HF. Carlos adds, &#8220;Are we in the Twilight Zone or Lost in Space? They sound like effects from a 60&#8217;s\/70&#8217;s sci-fi movie!&#8221; Those sounds are wild! The stuff of Star Wars. My only guess is that it&#8217;s [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_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},"jetpack_post_was_ever_published":false},"categories":[3,43],"tags":[8043,5448],"class_list":["post-49359","post","type-post","status-publish","format-standard","hentry","category-news","category-shortwave-radio","tag-carlos-latuff","tag-mystery-signals"],"jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/pn3uc-cQ7","jetpack-related-posts":[{"id":49146,"url":"https:\/\/swling.com\/blog\/2021\/06\/carlos-seeks-clarity-about-another-cw-station\/","url_meta":{"origin":49359,"position":0},"title":"Carlos seeks clarity about another CW station","author":"Thomas","date":"June 6, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Carlos Latuff, who writes: Today (June 5, 2021) I heard another mysterious CW transmission here in Rio Grande do Sul coast, this time on 8779 kHz, 18h31 UTC. I did some research and this frequency is related to Rome Radio (which is no longer\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\/2018\/03\/XHDATA-D-808-Left-Side.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Left-Side.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Left-Side.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/XHDATA-D-808-Left-Side.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":64390,"url":"https:\/\/swling.com\/blog\/2025\/10\/carlos-illustrated-radio-listening-report-and-recording-of-noaa-via-uscg-october-27-2025\/","url_meta":{"origin":49359,"position":1},"title":"Carlos\u2019 Illustrated Radio Listening Report and Recording of NOAA via USCG, October 27, 2025)","author":"Thomas","date":"October 28, 2025","format":false,"excerpt":"Many thanks to\u00a0SWLing Post\u00a0contributor and noted political cartoonist,\u00a0Carlos Latuff, who shares the following\u00a0illustrated radio listening report of a recent NOAA broadcast. Carlos notes: Hurricane Melissa, NOAA HF Voice Broadcast via USCG Chesapeake VA, 13089 kHz USB https:\/\/youtube.com\/shorts\/iEi_fqwMlZg?si=tyo_w5IveJDSKGSw Click here to view on YouTube. The radiofax of destruction: Hurricane Melissa approaching\u2026","rel":"","context":"In &quot;Art&quot;","block_context":{"text":"Art","link":"https:\/\/swling.com\/blog\/category\/art-2\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/10\/1000272010.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/10\/1000272010.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/10\/1000272010.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/10\/1000272010.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":57663,"url":"https:\/\/swling.com\/blog\/2023\/08\/carlos-pulls-headlines-from-kyodo-news-radiofax\/","url_meta":{"origin":49359,"position":2},"title":"Carlos pulls headlines from Kyodo News radiofax","author":"Thomas","date":"August 30, 2023","format":false,"excerpt":"Many thanks to\u00a0SWLing Post contributor, Carlos Latuff, who writes: Kyodo News is a Japanese news agency, the only one in the world that still transmits news via radiofax to Japanese vessels, on shortwave frequency of 16971 kHz USB. The international radiofax transmission standard is 120 lines per minute, but the\u2026","rel":"","context":"In &quot;Digital Modes&quot;","block_context":{"text":"Digital Modes","link":"https:\/\/swling.com\/blog\/category\/digital-modes\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Screenshot_20230829-165457-01.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Screenshot_20230829-165457-01.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Screenshot_20230829-165457-01.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Screenshot_20230829-165457-01.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":58155,"url":"https:\/\/swling.com\/blog\/2023\/11\/inspired-by-carlos-john-dives-into-the-world-of-radiofax\/","url_meta":{"origin":49359,"position":3},"title":"Inspired by Carlos, John dives into the world of Radiofax","author":"Thomas","date":"November 6, 2023","format":false,"excerpt":"Many thanks to SWLing Post contributor, John Johnson, who writes: Well, based on this post from Carlos Latuff--QSL: Australian Radiofax Received in Brazil--I got interested in HF weather fax decoding. I asked how to do it and got an answer but did not find a linked post that would help.\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\/2023\/11\/HFFax-Images-John-Johnson-cropped-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/11\/HFFax-Images-John-Johnson-cropped-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/11\/HFFax-Images-John-Johnson-cropped-1.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/11\/HFFax-Images-John-Johnson-cropped-1.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/11\/HFFax-Images-John-Johnson-cropped-1.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":57383,"url":"https:\/\/swling.com\/blog\/2023\/08\/typhoon-khanun-carlos-radiofax-decodes-using-an-xhdata-d-808-and-mag-loop-antenna\/","url_meta":{"origin":49359,"position":4},"title":"Typhoon Khanun: Carlos&#8217; Radiofax decodes using an XHDATA D-808 and Mag Loop antenna","author":"Thomas","date":"August 3, 2023","format":false,"excerpt":"Many thanks to SWLing Post contributor, Carlos Latuff, who recently shared a number of Radiofax images of Typhoon Khanun he's decoded over the past few days--apologies as I've been traveling and could not post when received. Carlos writes: Attached is a satellite image broadcasted today by Japanese meteorological agency via\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\/2023\/08\/Carlos-Radiofax-gear-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Carlos-Radiofax-gear-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Carlos-Radiofax-gear-1.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Carlos-Radiofax-gear-1.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/08\/Carlos-Radiofax-gear-1.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":65186,"url":"https:\/\/swling.com\/blog\/2026\/01\/can-you-help-carlos-id-this-cw-signal-on-8207-khz\/","url_meta":{"origin":49359,"position":5},"title":"Can you help Carlos ID this CW signal on 8207 kHz?","author":"Thomas","date":"January 17, 2026","format":false,"excerpt":"Many thanks to SWLing Post contributor Carlos Latuff, who writes: Dear Thomas, I was doing my morning radio listening on the Gua\u00edba waterfront in Porto Alegre, Brazil, when I came across this Morse code signal at 8207 kHz by pure chance. I tried to decode it using apps but didn't\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\/img.youtube.com\/vi\/tlPzPMqY5_Q\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49359","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=49359"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49359\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=49359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=49359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=49359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}