Visual SDR tools are always good for finding signals and monitoring RF spectrum. The only requirement is that those frequencies should fit in the bandwidth of RTL-SDR (about 2.4 MHz). More important than that, the software tools you will see here can listen to multiple frequencies at once. More than that, by selecting one frequency, demodulating it and sending the audio stream to ACARS decoder software you are limited to that single frequency.īut there are a few tools that work directly with RTL-SDR hardware, are free, cross-platform and perform ACARS demodulation. This is not reliable and takes a lot of resources. There are many tutorials on this subject and most of them involve piping an audio stream from a SDR application to an ACARS decoder application. Since RTL2832U based USB sticks are the cheapest SDR hardware this is what I will use for reception. The wide availability of cheap software defined radios makes it easy for anyone to receive and decode ACARS transmissions. The transmissions usually take place in VHF band, between 130 and 137 MHz. Free, reliable and cross platform tools.ĪCARS is a digital data link system for the transmission of messages between aircraft and ground stations. How to use AcarsDeco2 and acarsdec to receive and decode ACARS messages with RTL SDR hardware.
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