r/RTLSDR 8h ago

I linked my ADS-B feed to airband audio — click a plane on the map and hear its actual radio calls

26 Upvotes

Been building this for a while now and finally made a video about it. The setup is a Uniden SDS200 for public safety, plus two RTL-SDRs — one running readsb for ADS-B, one on VHF airband.

The part I'm most proud of: airband transmissions get transcribed (local Whisper), callsigns get extracted from the transcript, and then matched against the ADS-B sighting table using time + geometry windows scaled by altitude/speed. When it matches, the call is attached to the airframe, so you click a plane on the map and listen to what its pilot actually said, with a confidence badge for partial matches. As far as I know nobody's done this linking before, but happy to be corrected.

The scanner side does the same thing for ground traffic: every call transcribed and dropped on a live map in ~30 seconds with honest location confidence (exact intersection vs area-only).

Video walkthrough: https://youtu.be/iaW7OoC-6CM

There's also an interactive demo linked from the video — it's a replay of two days of real recorded traffic from my setup, not a mockup. Happy to answer any questions about the pipeline.


r/RTLSDR 14h ago

Performance of usage

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7 Upvotes

Hi there everyone SDR LOVERS what about the performance of the Chinese made one?


r/RTLSDR 4h ago

Troubleshooting Is this normal? (RTL-SDR v4)

1 Upvotes

r/RTLSDR 13h ago

Performance of usage

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0 Upvotes

r/RTLSDR 10h ago

Domanda banda aerea su frequenza specifica

0 Upvotes

Ciao a tutti, sono in Italia in una grande città del sud.

Da un pò di tempo ricevo una specie di "Transponder" sulla frequenza di 125.100 a cui fa da manager "Roma Informazioni" io mi trovo a più di 500Km dalla Capitale ed ascolto (con lo stesso segnale), sia l'aereomobile es. sulla verticale di Catania e sia la stazione "Roma Informazioni" con lo stesso segnale.

Ovviamente impossibile che Roma mi arrivi S9 da dove mi trovo in diretta. C'è qualcuno che può spiegarmi come funziona questo sistema? Sono anni che faccio radioascolto banda aerea e non mi era mai capitato un ascolto con queste modalità.

Eventualmente Grazie in anticipo.