Gqrx — a flexible SDR receiver for macOS
Gqrx is a free, open-source software-defined radio (SDR) application for macOS that builds on GNU Radio and the Qt toolkit. It enables reception and demodulation of many radio signal types, making it useful for hobbyists and professionals alike.
Key functions and controls
- Configurable audio output options for listening, recording, or routing to other applications
- Built-in tools for inspecting and decoding signals with basic analysis capabilities
- Scanning and tuning features to explore frequencies and quickly switch between signals
Visualization and device support
- Live spectrum and waterfall visualizations for real-time frequency monitoring and signal identification
- Compatibility with a broad range of SDR hardware, giving users freedom to choose the receiver that suits their needs
Who this is ideal for
Gqrx is well suited for amateur radio operators, radio experimenters, and engineers who want a straightforward, GUI-driven SDR program. Its combination of visual tools, demodulation options, and hardware flexibility makes it a strong option for learning and practical signal work.
Suggested alternative — Lantern (free)
If you want another free SDR application to try, Lantern is a recommended alternative that offers similar core features and a different user experience. It’s worth testing both to see which interface and workflow better match your requirements.
Technical
- Mac
- Free