# miek/inspectrum

Radio signal analyser

Repository: https://github.com/miek/inspectrum
Canonical: https://ross.abutalabs.com/products/inspectrum
Language: C++
License: GPL-3.0
License Family: copyleft
Topics: sdr, dsp
Last push: 2025-12-06T15:44:29+00:00

## Health v2 (maintenance only)
Score: 55/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 55, release rhythm 28, longevity 100
- inputs: {"age_days": 4112, "days_push": 270, "days_rel": 270, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2501, forks 304 (observed 2026-08-28T04:06:56.941774+00:00)

## What it is
inspectrum is a desktop tool for analysing captured radio signals, primarily from software-defined radio receivers. It provides a zoomable spectrogram, amplitude/frequency/phase/IQ plots, cursors for measuring symbol rates, and export of filtered or demodulated samples.

## Use cases
- analyse SDR captures with a spectrogram
- measure symbol rate of an unknown radio signal
- extract symbols from a recorded transmission
- inspect large IQ recording files
- reverse engineer a wireless protocol from RF captures
- export filtered or demodulated samples from a capture

## When to choose
- you need to visually inspect IQ recordings from SDR receivers
- you want to measure timing, period, or symbol rates of RF signals
- you work with SigMF or common complex sample file formats
- you need to handle very large (100GB+) capture files

## When to avoid
- you need real-time signal monitoring or live demodulation
- you want automated signal decoding rather than manual analysis
- you need a headless or scriptable DSP pipeline

## Facets
- artifact type: application
- maturity: active
- function: audio-processing, data-visualization, developer-tools
- domain: embedded-systems, hardware, developer-tools
- platform: windows, cross-platform
- tags: sdr, dsp, spectrogram, signal-analysis, radio, qt, reverse-engineering, linux, macos, desktop

## Member repositories
- miek/inspectrum (main) score 55

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:56.941774+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:26:55.689694+00:00, confidence not recorded.
  - readme: https://github.com/miek/inspectrum (fetched 2026-08-28T04:06:56.941774+00:00, sha c5c3223b6b7d)
- Data as of 2026-08-30T08:39:29.467469+00:00.