Tag Archives: radio nacional brazil

UPDATE: Radio Nacional da Amzonias Shortwave Service

by Paul Walker
News Director/Operations Assistant,
Wolf Creek Radio Broadcasting of Laramie, WY

As many know, Radio Nacional da Amazonias has been operating on a much reduced schedule for several months now. The shortwave service owned by the government broadcaster, Empresa Brasil de Comunicação is using transmitters that are about 50 years so and several technical breakdowns along with high energy costs have resulted in the reduced operating schedule.

What was 7 days a week 0750 to 0200UTC for both 6180 kHz (100 kW, 344 deg az) and 11780kHz (100kW, 312 deg az) has been (since July 1st 2026) 0745 to 2000UTC for 11780kHz and 2000 to 0200UTC for 6180kHz on weekdays with only 11780 on weekends 0900 to 2000UTC with 6180 off air weekends.

I contacted the Ombudsmans Office at the broadcaster regarding the current reduced schedule for Radio Nacional da Amazonias on Shortwave, mainly expressing concern for them losing access to many North American listeners with the reduced schedule and why getting back to normal is important. I also proposed a partial restoration of the full schedule. When you contact the Ombudsman’s Office, even as a non Brazilian, the 1988 Constitution details you are owed a reply. And I got one today… here’s what they said:

Dear Listener,

The Ombudsman’s Office appreciates your feedback and interest in the programming of Rádio Nacional.

Regarding your message, the Executive Management of Radio Stations thanks you for your message, your attention, and especially for the detailed account of the reception of Rádio Nacional da Amazônia on Shortwave in the United States. We also appreciate your comments on the programming and the importance of the service for listeners who follow the station from different parts of the world.

Regarding the reduction in broadcast hours on Shortwave, we inform you that the schedule will remain as currently practiced until the end of 2026. The expectation is that, in 2027, broadcasts will return to their usual times, as requested.

We also appreciate the observations and suggestions presented regarding the 11.780 kHz frequency and the shared reception records. They contribute to the station better understanding the experience of its listeners, including those who follow Rádio Nacional da Amazônia outside of Brazil.

So that does appear to be some good news! 6180 is pretty good in the eastern USA, but with its much more northerly beam, it’s not as good in the western US, but still pretty decent. 11780 signs off before it gets good in the western US.

And you’ve also got a CGTN (CRI) broadcast on 11780 from 00:00 to 01:00UTC, and 6180 from 00 to 05 UTC, both from sites in China, and those broadcasts do some damage to the Nacional Amazonias services in the western US. I’ve sent an email to CGTN asking if they’d consider moving those broadcasts to another frequency… but that’s another story for another time, I guess

By the way, you too can email the Ombudsman’s office, and I encourage you to do so: [email protected], and let them know how much you enjoy the services, as I have told them… between the lively futbol broadcasts, music, and the lively show with Mauricio Rabelo “Eu de Cá, Você de Lá” (Me here, you there), with listener interaction…the Amazonias Shortwave service is fun to listen to even if you don’t understand Portuguese.

Problems And Temporary Changes At The Shortwave Transmitter Park Near Brasilia

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 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.  This story was originally published November 9th.

Over the last few years, many of us who enjoy listening to Radio Nacional da Amazônia have noticed the 11780 kHz signal coming and going. It’s had several breakdowns, mostly because the transmitter is about 50 years old now. They’ve been running it at 100 kW instead of the full 250 kW, but even then, it’s been showing its age.

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

Curious about what was going on, I reached out to Manoel Caetano, Radio Engineering Manager at Empresa Brasil de Comunicação, which runs Radio Nacional. Here’s what he told me:

“We had a problem with the logic unit of the 11780 transmitter, but that’s been resolved. However, we’re still having issues with the 4CX5000 tubes, so 11780 is running at reduced power until we get replacements. Also, 6180 kHz has been switched to the 11780 kHz 312° antenna because of the COP30 event taking place in Belém, Brazil.”

Always interesting to get a peek behind the curtain like that. It’s 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.

Rádio Nacional da Amazônia Launches English & Spanish Programming

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 when they send in reception reports from other countries. The network will use this programming to highlight some content that has aired on international or cultural topics that have a relevance beyond Brazil, highlighting Radio Nacional as a broadcaster without borders.

The programming will air on the entire Radio Nacional Network, which includes the shortwave outlets at 6180khz (100kw, 239 deg az. beam) and 11780khz (100kw, 312 deg az. beam)

Full original announcement in Portuguese at this link

Full original announcement translated to English at this link

Sunday March 30th Edit: Paul Walker here, I originally posted this article. I realize I may have made a mistake when posting this.   The original announcement specified 1050pm local time March 31st, which would be 01050UTC April 1st. I jumbled up some dates/numbers on this, so it may not start till UTC time April 1st. My apologies for the mistake, if in fact I made one.

A Transmitter Park In Brazil Is Celebrating its 50th Birthday!

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 Comunicação , a government owned agency plans to recognize the facility’s Gold anniversary.

Find out more about the facility’s history at this link