gqrx-sdr/gqrx

Health v2 · maintenance only

Adoption not part of the score

3662 stars · 584 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Gqrx is an open source software defined radio (SDR) receiver built on GNU Radio and the Qt GUI toolkit. It supports a wide range of SDR hardware (RTL-SDR, Airspy, HackRF, Funcube Dongle, BladeRF, USRP, SoapySDR) and can operate as an AM/FM/SSB receiver or an FFT-only spectrum analyzer.

Use cases

• listen to AM/FM/SSB radio with an RTL-SDR dongle
• view an FFT spectrum plot and waterfall from an SDR device
• record and replay raw baseband I/Q data
• stream received audio over UDP to external decoders
• remotely control an SDR receiver over TCP
• decode NOAA APT weather satellite images
• use a HackRF or Airspy as a spectrum analyzer

When to choose

• you want a ready-to-use GUI receiver for common SDR hardware on Linux or Mac
• you need demodulation modes like AM, SSB, CW, FM-N, FM-W with AGC and squelch
• you want network hooks (TCP remote control, UDP audio streaming) for integration with other tools

When to avoid

• you need a headless or scriptable-only SDR processing pipeline
• you require Windows as a first-class supported platform (only available via radioconda)
• you want to build custom signal-processing flows rather than use a fixed receiver application

Facets

application · maturity active

audio-processing gui developer-tools hardware cross-platform windows cpp sdr software-defined-radio rtl-sdr hackrf airspy gnuradio spectrum-analyzer fft waterfall radio-receiver qt demodulation iq-processing real-time linux macos desktop

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markdown · JSON · MCP: product_card(name="gqrx-sdr/gqrx")