SDR-- is an open-source software-defined radio application. You build receivers by wiring nodes together: radio into demodulator, demodulator into speaker, decoder into map. You can see the whole signal path at a glance. Controls you use often can be pinned to a compact Rack view.
It runs as a desktop app with a local radio, or as a headless server next to the antenna that you open in any browser. Both use the same engine and interface.
Listening: AM, NFM, broadcast FM with stereo and RDS, SSB, DAB and digital voice.
Decoding: ADS-B aircraft, AIS ships, FT8, FT4, WSPR, POCSAG pagers, SSTV, amateur TV, ISM sensors and more.
Tools: passive radar and direction finding with coherent arrays like the KrakenSDR, satellite tracking with Doppler correction, a propagation map, scanning, signal identification, a NanoVNA antenna analyzer, an antenna calculator, and a codeplug programmer for AnyTone and Radtel radios.
Field mode: take direction finding and signal hunting to your phone.
Recording: device IQ, channel baseband and audio, with SigMF playback.
Automation: REST, WebSocket and MCP APIs, network IQ export and event forwarding.
Hardware: RTL-SDR, HackRF, Airspy, Pluto, SDRplay, KiwiSDR and SoapySDR devices.
Written in Rust. The DSP path never locks or allocates, and passive radar uses the GPU.
EU
Julian Haag 
No comments or reviews, maybe you want to be first?