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OnAir wiki

OnAir is a free, open-source SDR decoder for macOS, Windows, Linux and Android. Connect a radio (HackRF, RTL-SDR, Airspy, SDRplay, BladeRF, LimeSDR, USRP, PlutoSDR, Fobos, RX888, a network radio or a Hamlib rig), pick one of 120 modes in 14 groups, and watch or listen to what is on the air: digital TV and radio, aircraft and ships, satellites, two-way radio, pagers, sensors, amateur radio and more. OnAir is a receiver: it never decrypts anything. No radio yet? Press Tour in the app and try a built-in demo signal. Licence: GPL-3.0-or-later.

New here? Read Install, then Getting started and Your first reception.

Quick links

• Getting started: Install, Your first reception, Main window, Settings and files
• Radios: Supported radios (HackRF, RTL-SDR, Airspy, SDRplay, BladeRF / LimeSDR / USRP, PlutoSDR, Fobos, RX888, network radios, SoapySDR, Hamlib, sound card)
• Modes: All 120 modes, in groups: TV, Broadcast radio, Aviation, Maritime, Satellite & navigation, Two-way radio, Cellular & rail, Pagers, IoT & sensors, Weather & science, Amateur: digital, Amateur: voice & packet, HF utility, General & tools
• Tutorials: All tutorials and guides: one step-by-step page per mode, plus guides to the app's features
• Reference: Command line, Remote-control API, Voice codecs, Transmit, Build from source, Contributing, Code map
• New in 0.2.7: Band survey, Message database, Watchlists, TV recorder, Plugin SDK, Headless server, Time machine, Pass scheduler and more in the Changelog
• Help: Troubleshooting, FAQ
• Project: Legal, Privacy, Signal samples, Live map, Android, Changelog

Download

The current stable release is 0.2.7: github.com/adswill/OnAir/releases/latest.

System	File
macOS 15+	OnAir-...-macos-arm64.dmg (Apple silicon) or ...-macos-x86_64.dmg (Intel, needs AVX2)
Windows 10 / 11, 64-bit	OnAir-...-windows-x64-setup.exe or ...-windows-x64.zip
Linux x86-64 and arm64	onair_<version>_<arch>.deb (Debian, Ubuntu) or the portable tar.gz
Android 9+, arm64	OnAir-...-android.apk (see Android)

Details, first-run steps and USB drivers are on the Install page.

Support and community

• Questions and chat: Discord
• Bug reports and requests: GitHub Issues
• Website: https://on-air.dev, with the same documentation
• Signal samples to try without a radio: https://files.on-air.dev; live map of what OnAir users share: https://map.on-air.dev
• OnAir is free and has no ads; you can support it on Ko-fi

OnAir name and logo © 2026 Kristijonas Adomaitis; the logo is not covered by the GPL licence of the source code.