# portapack-mayhem/mayhem-firmware

The firmware for the HackRF+PortaPack H1/H2/H4/H4M

Repository: https://github.com/portapack-mayhem/mayhem-firmware
Canonical: https://ross.abutalabs.com/products/mayhem-firmware
Homepage: https://hackrf.app
Language: C
License: GPL-3.0
License Family: copyleft
Topics: hackrf, hackrf-components, portapack, sdr, sdr-receiver, sdrsharp, radio-frequency, radio
Last push: 2026-08-25T00:23:03+00:00

## Health v2 (maintenance only)
Score: 83/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 52, longevity 100
- inputs: {"age_days": 2348, "days_push": 9, "days_rel": 162, "gap_med": 92, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5361, forks 909 (observed 2026-08-28T04:09:16.036476+00:00)

## What it is
Mayhem is open-source firmware for the HackRF One combined with the PortaPack H1/H2/H4/H4M add-on, turning the SDR into a standalone touchscreen RF device. It is a feature-rich fork of Havoc/PortaPack firmware with many apps for receiving, transmitting, and analyzing radio signals.

## Use cases
- explore and analyze radio frequency signals with a portable SDR
- receive and decode RF transmissions without a computer
- replay captured RF signals for security research
- flash custom firmware onto a HackRF+PortaPack device
- use a handheld alternative to a Flipper Zero for RF work

## When to choose
- you own a HackRF with a PortaPack H1/H2/H4/H4M and want a maintained, feature-rich firmware
- you want standalone RF reception, transmission, and analysis without a laptop
- you want an actively developed fork with frequent nightly releases

## When to avoid
- you need SDR software for a different radio than HackRF+PortaPack
- you want a stable production-grade product rather than experimental nightly builds
- you need legal-compliance guarantees - transmitting with it can violate radio regulations

## Facets
- artifact type: application
- maturity: active
- function: embedded, security, developer-tools
- domain: hardware, embedded-systems, security
- platform: embedded, cross-platform
- tags: sdr, hackrf, portapack, firmware, radio, rf-research, signal-analysis, radio-frequency, hardware

## Member repositories
- portapack-mayhem/mayhem-firmware (main) score 83

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:16.036476+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 2026-08-29T17:58:45.651805+00:00, confidence not recorded.
  - readme: https://github.com/portapack-mayhem/mayhem-firmware (fetched 2026-08-28T04:09:16.036476+00:00, sha 2edda2cde771)
  - homepage: https://hackrf.app (fetched 2026-08-29T08:53:02.167042+00:00, sha 96df2a02cc82)
  - site_page: https://release.hackrf.app (fetched 2026-08-29T08:53:02.169746+00:00, sha 1edec05f5940)
- Data as of 2026-08-30T08:39:29.467469+00:00.