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Capture and decode FM radio

https://witestlab.poly.edu/blog/capture-and-decode-fm-radio/

This experiment is meant to teach the basics of FM signal processing.
It should take about 60-120 minutes to run depending on your familiarity with the reference material, but you will need to have reserved that time in advance. This experiment uses wireless resources, and you can only use wireless resources on GENI during a reservation.
To reproduce this experiment on GENI, you will need an account on the GENI Portal, and you will need to have joined a project. You should have already uploaded your SSH keys to the portal. The project lead of the project you belong to must have enabled wireless for the project. Finally, you must have reserved time on a wireless testbed that has RTL software defined radio devices. These instructions specifically use RTL-SDR devices on the "grid" testbed at ORBIT.

Background

A software defined radio captures IQ samples and passes them to a host computer for further processing in software. In this experiment, we will capture a slice of spectrum that includes an FM radio transmission, then demodulate that signal and turn it into an audio file.
For more information about IQ signals, and IQ signal modulation and demodulation, watch the following video:

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