softwareradio
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HPSDR - High Performance Software Defined Radio
The HPSDR is an open source (GNU type) hardware and software project intended as a "next generation" Software Defined Radio (SDR) for use by Radio Amateurs ("hams") and Short WaveThe Universal Software Radio Peripheral
The Universal Software Radio Peripheral, or USRP, is device which allows you to create a software radio using any computer with a USB 2 port. The entire design of the USRP is open source.