gnuradio: gnuradio (free software toolkit for building SDRs) gnuradio: gnuradio: GNU Radio is a free & open-source software development toolkit gnuradio: that provides signal processing blocks to implement software gnuradio: radios. It can be used with readily-available low-cost external RF gnuradio: hardware to create software-defined radios, or without hardware gnuradio: in a simulation-like environment. It is widely used in hobbyist, gnuradio: academic and commercial environments to support both wireless gnuradio: communications research and real-world radio systems. gnuradio: gnuradio: homepage: http://gnuradio.org