On this episode of Hak5, a popular technology YouTube channel, Shannon does a tutorial on how to get started with the HackRF. The HackRF is a recently released software defined radio similar to the RTL-SDR dongle, but with transmit capabilities.
In the video she shows how to set up the HackRF on Pentoo Linux and GNU Radio. She then shows how to use a GNU Radio program that can receive multiple broadcast FM signals simultaneously. The GNU Radio program is one that is based on Micheal Ossmans GNU Radio video tutorials.