HB9UF: FM deviation, modulation index and sidebands with an RTL SDR dongle

In this video, I use a Kenwood TM-D700 transceiver to generate a frequency modulated signal that I investigate with gnuradio. In the second part of the video, I discuss some of the theory that helps understanding those observations. The gnuradio pipeline that I used can be found here: https://gist.github.com/mweyland/cf07...