# demantz/RFAnalyzer

Analyze RF signals on Android with HackRF, RTL-SDR, Airspy (HF+) and HydraSDR

Repository: https://github.com/demantz/RFAnalyzer
Canonical: https://ross.abutalabs.com/products/rfanalyzer
Homepage: http://demantz.github.io/RFAnalyzer/
Language: Kotlin
License: GPL-2.0
License Family: copyleft
Topics: airspy, hackrf, ham-radio, rtl-sdr, sdr, hydrasdr
Last push: 2026-04-28T06:10:38+00:00

## Health v2 (maintenance only)
Score: 68/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 79, release rhythm 35, longevity 100
- inputs: {"age_days": 4336, "days_push": 127, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1082, forks 244 (observed 2026-08-28T04:03:30.935729+00:00)

## What it is
RF Analyzer is an Android application for real-time RF spectrum analysis using SDR hardware such as HackRF, RTL-SDR, Airspy HF+, and HydraSDR. It displays live FFT and waterfall plots, supports analog demodulation modes (CW, AM, FM, SSB), and can record and play back raw IQ data.

## Use cases
- analyze rf signals on android with a hackrf or rtl-sdr dongle
- view a live fft and waterfall of the radio spectrum on my phone
- demodulate AM/FM/SSB radio signals with an SDR on mobile
- record and replay raw IQ samples from an SDR
- identify unknown signals and frequencies in the airwaves
- use my phone as a portable spectrum analyzer for ham radio

## When to choose
- you want a mobile, touch-optimized SDR spectrum analyzer with waterfall display
- you own HackRF, RTL-SDR, Airspy, or HydraSDR hardware and use an Android phone
- you need demodulation, IQ recording, and bookmarking in a single portable app

## When to avoid
- you need a full-featured desktop SDR suite like SDR#, SDR++, or GQRX
- you use iOS or non-Android platforms
- you require digital-mode decoding (e.g., DMR, P25) which is not supported

## Facets
- artifact type: application
- maturity: active
- function: audio-processing, data-visualization, image-processing
- domain: hardware, developer-tools
- platform: -
- tags: sdr, spectrum-analyzer, hackrf, rtl-sdr, airspy, ham-radio, fft, waterfall, demodulation, rf, real-time, android, mobile

## Member repositories
- demantz/RFAnalyzer (main) score 68

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:30.935729+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 2026-08-30T06:51:14.941803+00:00, confidence not recorded.
  - readme: https://github.com/demantz/RFAnalyzer (fetched 2026-08-28T04:03:30.935729+00:00, sha 3b6c888303b7)
  - homepage: http://demantz.github.io/RFAnalyzer/ (fetched 2026-08-29T12:53:17.005659+00:00, sha cffa03fdfa8f)
- Data as of 2026-08-30T08:39:29.467469+00:00.