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Escuta AbertaRadio listening laboratory
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About Escuta Aberta

A noncommercial personal shortwave listening laboratory to help those starting out in radio listening and to gather, in one place, what is already openly published about the spectrum in Brazil.

Why it exists

The radio spectrum belongs to everyone, but almost no one knows what is in it. There are radio amateurs talking to the other side of the planet using just a few watts, international shortwave broadcasters, the Space Station, and the Sun stirring the ionosphere and changing everything hour by hour.

To listen to this, you do not need to buy anything: there are radio amateurs who leave their own receiver open on the internet, and there are networks and agencies that publish propagation in real time. Escuta Aberta puts these pieces together, explains in simple Portuguese what each one means, and points you to those who do the actual work.

The purpose is educational. It serves the curious, the student, the teacher who wants a real example in class, and anyone thinking about becoming a radio amateur.

A laboratory, not a product

  • Noncommercial. There are no ads, sponsorships, subscriptions, or anything for sale. Hosting costs come out of my own pocket.
  • Open sources only. Everything comes from those who already publish openly, and each set from catalog states where it came from and under what license.
  • Nothing is recorded or retransmitted. Third-party receivers appear only as links.
  • No tracking. I do not use cookies or visitor counters, and I do not sell or pass on anyone's data.

Who maintains

Fernando, amateur radio operator with the callsign PU2TQF. To talk to me, use the QRZ.com page. Correction, suggestion and removal requests are welcome.

How to cite

Used the material in a class, paper, or report? Cite the laboratory and, above all, the original source of each piece of data:

ESCUTA ABERTA. Open data radio listening laboratory. Maintained by PU2TQF, 2026. Available at: https://escuta.moretes.com/. Accessed on: (date).

For those who maintain an open receiver

If your WebSDR, KiwiSDR, or OpenWebRX appears on the page Receivers, it is because it is already listed in a public directory. What the laboratory does with it:

  • Show link, the city and the bands, to send listeners to your page.
  • Check if it is on the air every 6 hours, with a single request to the status page (/status on KiwiSDR, /status.json on OpenWebRX, the home page on WebSDR). It identifies itself in the User-Agent as EscutaAberta/1.0 with the link to my page on QRZ.
  • Does not open audio or waterfall display, does not record and does not retransmit anything. Whoever wants to listen goes to their receiver and follows your rules.

Prefer to stay off the list, want checking to stop, or want to change how your receiver is described? Talk to me via QRZ.com page which I will adjust.

Privacy and LGPD

This site is mine, Fernando, amateur radio operator PU2TQF. I maintain it as an individual, for noncommercial purposes, and I am the one who decides what goes here.

What people appear. Only amateur radio callsigns, which data protection laws treat as personal data. They appear in the public receivers list as owner or maintainer, and on WSPR propagation maps truncated to the prefix (PY2, K9), along with the 4-character Maidenhead locator that the network already publishes. I do not publish anyone's name, address, or coordinates. I also do not publish audio, nor anything that my station receives.

So that. Noncommercial teaching and dissemination of radio listening and propagation.

Legal basis. I use only what the radio amateur themselves has made public in open networks and directories, for the same signal study purpose, out of legitimate interest and respecting what the data subject expects (Law 13.709/2018, art. 7, IX and paragraphs 3 and 4).

What I do not do. I do not use cookies or visitor counters. I do not load anything from other servers. I do not keep logs of who accesses the site. I do not sell or pass on anyone's data. The site is hosted on AWS, which processes traffic to deliver the pages.

Your rights. Under art. 18 of the LGPD, you can ask me to confirm if your callsign appears here, see what appears, correct it, delete it or stop appearing, and know with whom I share it. The short answer is that I do not share it with anyone. If the request is to delete, I delete it without asking why.

How to apply. By my QRZ.com page. You can also complain to ANPD, the National Data Protection Authority.

The complete reasoning on what can be heard and published is in the guide What you can listen to and what you can publish.

Escuta Aberta is a personal, educational, and noncommercial project. It has no ads, sponsorships, or anything for sale.

The guides are my interpretation of the rules and sources cited in each. They are not legal advice or official guidance from Anatel. Regulations change, so confirm with the source before acting.

Propagation and space weather indices come from NOAA SWPC, N0NBH (hamqsl.com), and WSPRnet, queried via wspr.live. Credits and usage rules belong to them, and this site has no affiliation with or endorsement from any of these sources. Data from wspr.live cannot be used for commercial purposes.

The listed receivers belong to their respective maintainers. Here you will only find the link and whether the page is responding. Listen through the owner's page, follow their rules, and do not record or disclose communications not intended for the public, such as aviation, maritime, CB, or private services.

The data is provided as is, without warranty that it is correct, complete, or online. Do not use it for navigation, emergencies, or critical decisions.

Sources and credits

Almost everything that appears here comes from those who have been doing this work much longer, and the credit is theirs:

License

What belongs to me (the guide texts and receiver list curation) is under Creative Commons Attribution 4.0 (CC BY 4.0). Third-party data follows the source license, indicated in each set of the catalog, and are not under CC BY.

What this site is not

  • Not an emergency, navigation, or forecasting service. Do not use for important decisions.
  • This is not legal advice. The guide on what can be heard and published is my own understanding, complete with sources for you to check.