inspectrum is a radio signal analyser for examining captured signals, with a particular focus on recordings from software-defined radio receivers.
It helps you inspect signal behaviour visually and interactively, making it useful for reverse engineering, protocol analysis, and general SDR investigation work.
This is free and open source software.
Key Features
- Supports very large capture files, including files larger than 100GB.
- Provides a spectrogram view with zoom and pan controls.
- Plots amplitude, frequency, phase, and IQ samples.
- Includes cursors for measuring period and symbol rate, and for extracting symbols.
- Exports selected time periods, filtered samples, and demodulated data.
- Cross-platform support – runs under Linux, macOS, and Windows.
Website: github.com/miek/inspectrum
Support:
Developer: Mike Walters and contributors
License: GNU General Public License v3.0
inspectrum is written in C++. Learn C++ with our recommended free books and free tutorials.
Related Software
| Software-Defined Radio Tools | |
|---|---|
| SDRangel | SDR Rx/Tx software for Airspy, Airspy HF+, BladeRF, HackRF, + |
| SigDigger | Digital signal analyzer and graphical front end for Suscan |
| rtl_433 | Receives and decodes radio transmissions |
| Gqrx | SDR powered by the GNU Radio and the Qt graphical toolkit. |
| sdrtrunk | Java application |
| Qt-DAB | DAB decoder |
| AbracaDABra | DAB and DAB+ Software Defined Radio (SDR) application |
| OpenWebRX | Multi-user SDR receiver |
| inspectrum | Radio signal analyser for examining captured signals |
| welle.io | DAB and DAB+ software defined radio |
| SDR++ CE | Community-driven fork of SDR++ |
| OpenWebRX+ | Improved version of OpenWebRX |
| multimon-ng | Decoder for a broad range of digital transmission modes |
| GNU Radio | Signal processing runtime and signal processing software |
| DABlin | DAB/DAB+ audio service from a live transmission / stored recording |
| sdr_j_fm | FM receiver |
| AetherSDR | Linux-native client for FlexRadio Systems transceivers |
| Quisk | Designed for low latency CW operation |
| AIS-catcher | Versatile AIS receiver for software-defined radio |
| gr-dab | GNU Radio Digital Audio Broadcasting module |
| rtl-dab | DAB/DAB+ receiver to use with rtl-sdr sticks |
Read our verdict in the software roundup.
 LinuxLinks helps you discover the best free and open source software for Linux. Explore our extensive collection of recommended applications, including alternatives to popular proprietary software.We also publish software reviews, Linux tutorials, hardware reviews, free programming books and articles covering the wider open source community. Browse our Linux resources to discover more. Know a useful free and open source Linux application we haven't covered? Suggest a program for inclusion. Has your software been featured on LinuxLinks? Display one of our Featured on LinuxLinks badges on your website or GitHub README. |
Please read our Comment Policy before commenting.