Setup

Install Packages

sudo apt install librtlsdr-dev python3-venv portaudio19-dev

Note if you get device permissions errors then re-plug your RTL

Alma 8

pip install --upgrade pip
sudo dnf install portaudio python3-tkinter

ahh

Initialize python virtual environment

python3 -m venv ./venv
source ./venv/bin/activate
pip install --upgrade pip
pip3 install -r requirements.txt

Running Spectrogram

./hello_rtl.py

You can then follow the prompts on the terminal to tune the receiver

Running minimal FM chain

rtl_sdr -f 104.7M -s 256k - | python3 minimal_fm.py | sox -t raw -r 256000 -b 16 -c 1 -L -e signed-integer - -d rate 32000