# OnAir: new open-source SDR receiver supports 120 modes across platforms

> **Key takeaway:** Kristijonas Adomaitis released OnAir, a GPL v3+ SDR receiver supporting 120 modes including digital TV, DAB+, satellite, and amateur radio protocols across macOS, Windows, Linux and Android.

**Published:** 2026-10-19T16:12:33+00:00 
**Source:** Adafruit Electronics 
**Category:** open-hardware 
**Canonical URL:** https://fosswire.org/news/onair-new-open-source-sdr-receiver-supports-120-modes-across.html 

## Summary
OnAir is a new free and open source software-defined radio receiver available as prebuilt binaries for four operating systems. It unifies reception of broadcast, satellite, aviation, cellular and amateur radio signals in a single application, with broad hardware compatibility from low-cost RTL-SDR dongles to professional USRP equipment. Users without hardware can analyze recorded IQ samples or run a demo signal tour.

## What OnAir covers and what it skips
- **120 modes** in one program: DVB-T/T2, DVB-C, DVB-S/S2, ATSC, ISDB-T, DTMB, DAB+, FM, DRM, ADS-B, ACARS, VDL2, satellite protocols, GNSS, FT8, PSK31, CW, pagers, cell tower decoding, spectrum analyzer
- **Hardware support**: HackRF, RTL-SDR, Airspy, SDRplay, BladeRF, LimeSDR, Pluto, USRP, Fobos, RX888, RFNM, network radios, sound cards, Hamlib rigs
- **File formats without hardware**: cs8, cu8, cf32, ci16, cu16, SigMF, two-channel WAV
- **LTE Cells mode**: decodes cells, queries OpenCelliD, plots on map with offline caching
- **TV channel scanner**: feeds crowd-sourced channel list
- **Missing codecs**: AMBE, IMBE, HDC excluded due to patents/proprietary status; digital voice and HD Radio require user-supplied libraries
- **License**: GPL v3 or later

## Why it matters
OnAir consolidates a fragmented SDR tool landscape into one cross-platform application, lowering the barrier for radio experimentation. Its prebuilt binaries and broad hardware support make it accessible to hobbyists with cheap RTL-SDR dongles as well as researchers with professional gear.