Acarsdeco2 |verified| May 2026

acarsdeco2 --device 0 --freq 131.550e6 This decodes only one frequency. To take advantage of multi-channel decoding:

This article explains what acarsdeco2 is, how it differs from other decoders, and how to set it up to turn your $20 RTL-SDR dongle into a real-time aircraft messaging receiver. acarsdeco2 is a lightweight, multi-channel ACARS decoder written in C. It is specifically designed to work with RTL-SDR devices (using the rtl-sdr library) and can decode multiple ACARS frequencies simultaneously within the bandwidth of your SDR. acarsdeco2

acarsdeco2 --device 0 --freq-list 131.125e6,131.475e6,131.550e6,131.725e6,131.850e6 To feed decoded messages into a web dashboard or logging system: acarsdeco2 --device 0 --freq 131