{"id":64542,"date":"2025-11-09T23:13:48","date_gmt":"2025-11-10T03:13:48","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=64542"},"modified":"2025-11-13T18:19:41","modified_gmt":"2025-11-13T22:19:41","slug":"problems-and-temporary-changes-at-the-shortwave-transmitter-park-near-brasilia","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2025\/11\/problems-and-temporary-changes-at-the-shortwave-transmitter-park-near-brasilia\/","title":{"rendered":"Problems And Temporary Changes At The Shortwave Transmitter Park Near Brasilia"},"content":{"rendered":"

\"\"<\/a><\/p>\n

The 11780khz antenna beaming at 312 degrees<\/p>\n

(compiled, posted and edited by Paul Walker, KSKO-FM McGrath Alaska Program Director and Avid SWL’er)<\/p>\n

UPDATE: On November 13th, I was told that 11780khz is operating with 50,000 watts transmitter power output instead of it’s usual 100,000 Watts. It was also shared with me that new tubes are in the process of being ordered and they hope to be back to normal about in about a week from the date of this update.\u00a0 This story was originally published November 9th.<\/p>\n

Over the last few years, many of us who enjoy listening to Radio Nacional da Amaz\u00f4nia<\/strong> have noticed the 11780 kHz<\/strong> signal coming and going. It\u2019s had several breakdowns, mostly because the transmitter is about 50 years old<\/strong> now. They\u2019ve been running it at 100 kW<\/strong> instead of the full 250 kW<\/strong>, but even then, it\u2019s been showing its age.<\/p>\n

The weekend of November 8th<\/strong>, 11780 kHz was off again. But this time, 6180 kHz<\/strong> was sounding unusually good up here in Alaska<\/strong> \u2014 stronger and clearer than I\u2019ve heard it in a while. That one usually beams at 239 degrees<\/strong> toward South America, so it really caught my attention.<\/p>\n

Curious about what was going on, I reached out to Manoel Caetano<\/strong>, Radio Engineering Manager at Empresa Brasil de Comunica\u00e7\u00e3o<\/strong>, which runs Radio Nacional. Here\u2019s what he told me:<\/p>\n

\n

\u201cWe had a problem with the logic unit of the 11780 transmitter, but that\u2019s been resolved. However, we\u2019re still having issues with the 4CX5000 tubes<\/strong>, so 11780 is running at reduced power until we get replacements. Also, 6180 kHz<\/strong> has been switched to the 11780 kHz 312\u00b0 antenna<\/strong> because of the COP30 event<\/strong> taking place in Bel\u00e9m, Brazil.\u201d<\/p>\n<\/blockquote>\n

Always interesting to get a peek behind the curtain like that. It\u2019s good to know the folks at EBC are keeping these classic shortwave services going, even if it means juggling transmitters and antennas from time to time. Thank you to Manoel for answering my questions and providing the picture.<\/p>\n","protected":false},"excerpt":{"rendered":"

The 11780khz antenna beaming at 312 degrees (compiled, posted and edited by Paul Walker, KSKO-FM McGrath Alaska Program Director and Avid SWL’er) UPDATE: On November 13th, I was told that 11780khz is operating with 50,000 watts transmitter power output instead of it’s usual 100,000 Watts. It was also shared with me that new tubes are […]<\/p>\n","protected":false},"author":64,"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":[43],"tags":[10470,10472,1594,10468,4156,10474,10477,10475,10960],"class_list":["post-64542","post","type-post","status-publish","format-standard","hentry","category-shortwave-radio","tag-10470","tag-10472","tag-brazil","tag-ebc","tag-paul-walker","tag-radio-nacional","tag-radio-nacional-amazonias","tag-radio-nacional-brazil","tag-radio-nacional-de-amazonias"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-gN0","jetpack-related-posts":[{"id":59144,"url":"https:\/\/swling.com\/blog\/2024\/03\/a-transmitter-park-in-brazil-is-celebrating-its-50th-birthday\/","url_meta":{"origin":64542,"position":0},"title":"A Transmitter Park In Brazil Is Celebrating its 50th Birthday!","author":"Paul Walker","date":"March 1, 2024","format":false,"excerpt":"The facility 40km northwest of Brasilia originally cost $15 Million USD to build and will turn 50 years old on March 11, 2024. It's home to several SW, AM and FM transmitters , including Radio Nacional de Amazonias on 6180 and 11780khz. The stations owner, Empresa Brasil de Comunica\u00e7\u00e3o ,\u2026","rel":"","context":"In "Program Spotlight"","block_context":{"text":"Program Spotlight","link":"https:\/\/swling.com\/blog\/category\/program-spotlight\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/03\/ja_9935.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/03\/ja_9935.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/03\/ja_9935.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/03\/ja_9935.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/03\/ja_9935.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":62459,"url":"https:\/\/swling.com\/blog\/2025\/03\/radio-nacional-da-amazonia-launches-english-spanish-programming\/","url_meta":{"origin":64542,"position":1},"title":"R\u00e1dio Nacional da Amaz\u00f4nia Launches English & Spanish Programming","author":"Paul Walker","date":"March 27, 2025","format":false,"excerpt":"With thanks to Atsuhiko Takezawa in the World Radio & Television Handbook Facebook group for the tip-off Starting March 31st, Radio Nacional will broadcast a 10 minute program in english and spanish at 01:50UTC! EBC's Executive Radio Manager Thiago Regotto says this new programming is in response to listener requests\u2026","rel":"","context":"In "Broadcasters"","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\/2025\/03\/486448039_10236930876832235_5716199045171719391_n-300x200.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":59116,"url":"https:\/\/swling.com\/blog\/2024\/02\/my-favorite-shortwave-station-and-a-story-of-radio-waves-connecting-people-across-the-globe\/","url_meta":{"origin":64542,"position":2},"title":"My Favorite Shortwave Station and a Story Of Radio Waves Connecting People Across The Globe","author":"Paul Walker","date":"February 27, 2024","format":false,"excerpt":"Radio Nacional Brazil staff & reception of the Amazonias shortwave service in Alaska! by Paul Walker, Program Director Of KSKO 89.5 McGrath, Alaska\u00a0 I moved up to McGrath for 2 reasons, the job and DX'ing! Some people move here because they're outdoorsy types.. hunting, fishing or etc but not me.\u2026","rel":"","context":"In "News"","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\/2024\/02\/collage-1-300x162.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/02\/collage-1-300x162.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/02\/collage-1-300x162.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/02\/collage-1-300x162.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":50435,"url":"https:\/\/swling.com\/blog\/2021\/10\/radio-nacional-da-amazonia-prepares-for-drm-broadcasts\/","url_meta":{"origin":64542,"position":3},"title":"Radio Nacional da Amazonia prepares for DRM broadcasts","author":"Thomas","date":"October 5, 2021","format":false,"excerpt":"Many thanks to a number of SWLing Post contributors who share the following news from the DRM Consortium: Brazil prepares for domestic DRM transmissions to Amazonia (DRM Consortium) DRM broadcasts from a locally produced transmitter will be originated for the first time in Latin America, as Brazil will officially start\u2026","rel":"","context":"In "Digital Modes"","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\/2021\/10\/Brazil-tx-DRM.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/10\/Brazil-tx-DRM.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/10\/Brazil-tx-DRM.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/10\/Brazil-tx-DRM.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":59444,"url":"https:\/\/swling.com\/blog\/2024\/04\/why-i-dx\/","url_meta":{"origin":64542,"position":4},"title":"Why I DX?","author":"Paul Walker","date":"April 6, 2024","format":false,"excerpt":"...... or as all the locals call it, \"Talking to the aliens at the International Space Station.\" You might ask yourself, what in the world? 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Enjoy: https:\/\/youtu.be\/hufXnq0yzqQ?feature=shared Click here to view on YouTube.","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/hufXnq0yzqQ\/0.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\/64542","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\/64"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=64542"}],"version-history":[{"count":4,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/64542\/revisions"}],"predecessor-version":[{"id":64592,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/64542\/revisions\/64592"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=64542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=64542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=64542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}