“Building a general radio that can receive and transmit, and attaching it to a software system that can fill in the gaps of what we normally think of as radio, is kind of like the Enterprise’s deflector dish: Give engineering 20 minutes and it can do anything the captain needs to move the plot along. One of Matt Ettus’ USRPs, with the right daughterboards and radio software, can capture FM, read GPS, decode HDTV, transmit over emergency bands and open garage doors.”