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Escuta AbertaRadio listening laboratory
--:-- UTC · --:-- BRT

WebSDR · KiwiSDR · OpenWebRX

Open receivers: listen through your browser

There are radio amateurs who connect their own receiver to the internet and let anyone use it. You open the page, choose the frequency and listen, without installing anything and without buying anything. Here are the ones in Brazil, with the status of each one and how long they stayed on the air last week. Learn how to use a WebSDR in ten minutes.

In the catalog
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receivers with open link
On the air now
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States
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Types
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Each receiver in this list belongs to the person who maintains it. Here are only the links and the status of each one. I do not record, retransmit, or open audio or waterfall displays from third party receivers. The only automatic thing is a light check, every 6 hours, of each receiver status page, to see if it is on the air and how fast it responded; it identifies itself as EscutaAberta/1.0 with the station link and respects the robots.txt of each server. Receiver owners who prefer to stay out of the list or check: just let us know. Listen through the owner's page and respect their rules: session time, chat usage and whatever else they ask. And remember: aviation, maritime, CB and private services you can listen to, but not record or disclose.
Filters
Type
Band (any of the marked ones applies)
Amateur radio bands use the coverage that the owner reports on the receiver page. Those who do not report do not appear in this filter.
Distance from
The position stays only in your browser, rounded to about 10 km, and is never sent.

Each tick is a check every 6 hours: high, on the air; low, off the air; outlined, not verified. The frequency buttons open the receiver already tuned to the FT8 frequency of that band.

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The numbers

All receivers in the catalog.

By state

How many receivers in each state.

By type

The program each receiver uses.

Coverage by amateur radio band

How many cover at least part of each band, based on the coverage reported by the owner.

On the air throughout the week

How many responded in each check, alongside how many were verified.

Availability, receiver by receiver

The last 28 checks (one week). More available above.

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Where to find more

Directories maintained by the community itself, featuring receivers from all over the world:

Data: receptores.json, with coverage in kHz and availability measured here. Did we miss a receiver, or do you own one and want to be removed from the list or fix something? See the contact page About.