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AcarSDeco2 installation script for RPi 2/3/4 and Raspbian Stretch/Buster

Copy-paste following command in SSH console and press Enter key. The script will install and configure acarsdeco2.

sudo bash -c "$(wget -O -"

After script completes installation, it displays following message

(1) In your browser, go to web interface at

(2) To view/edit configuration, open config file by following command:
     sudo nano /usr/share/ad2/ad2.conf

    (a) Default value of gain is auto
        To use another value of gain, add following NEW LINE
        (replace xx by desired value of gain)
          --gain xx
    (b) Default value of frequency correction is 0
        To use a different value, add following NEW LINE
        (replace xx by desired frequency correction in PPM)
          --freq-correction xx

    Save (Ctrl+o) and Close (Ctrl+x) the file
    then restart ad2 by following command:
          sudo systemctl restart ad2

To see status sudo systemctl status ad2
To restart    sudo systemctl restart ad2
To stop       sudo systemctl stop ad2


The configuration file can be edited by following command:
sudo nano /usr/share/ad2/ad2.conf

Default contents of config file
Default setting are are bare minimum.
You can add extra arguments, one per line starting with --

--freq 131550000
--freq 131725000
--http-port 8686

To see all config parameters

cd /usr/share/ad2
./acarsdeco2 --help


To completely remove configuration and all files, give following 4 commands:

sudo systemctl stop ad2 
sudo systemctl disable ad2 
sudo rm /lib/systemd/system/ad2.service 
sudo rm -rf /usr/share/ad2 
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