Install acarsdec

Here are the steps to install acarsdec from source on Ubuntu:

Open the terminal on your Ubuntu system.

Install the required dependencies by running the following command:

sudo apt-get install build-essential libtool librtlsdr-dev libusb-1.0-0-dev

Download the acarsdec source code by running the following command:
```
git clone https://github.com/TLeconte/acarsdec.git
```
Change to the acarsdec directory by running the following command:
```
cd acarsdec
```
Run the following command to compile and install acarsdec:
```
make && sudo make install
```
Once the installation is complete, you can run acarsdec by typing the following command:
```
acarsdec
```

Note: You may need to configure your RTL-SDR device before running acarsdec. You can do this by running the rtl_test command in the terminal, which will check if your device is working properly. If it is not working, you may need to install additional drivers or firmware.