My nearly 10 year-old GRE-800 is on its way out. Rather than spend big bucks on a replacement, I want to do this as a DIY project. I plan to gather information here and once I have my design, publish that information.
I already owned the Chromebook and have Linux enabled. I installed gnuradio:
sudo apt install -y gunuradio
And I'm learning the software while waiting for my RTL-SDR unit to arrive.