Editing Software-defined radio (section)

=== HPSDR ===
The [[HPSDR]] (High Performance Software Defined Radio) project uses  a 16-bit {{nowrap|135 MSPS}} analog-to-digital converter that provides performance over the range 0 to {{nowrap|55 MHz}} comparable to that of a conventional analogue HF radio. The receiver will also operate in the VHF and UHF range using either mixer image or alias responses. Interface to a PC is provided by a [[Universal Serial Bus|USB]] 2.0 interface, although [[Ethernet]] could be used as well.  The project is modular and comprises a [[backplane]] onto which other boards plug in. This allows experimentation with new techniques and devices without the need to replace the entire set of boards. An [[Transmitter#Power output|exciter]] provides {{nowrap|1/2 W}} of RF over the same range or into the VHF and UHF range using image or alias outputs.<ref name="hpsdrhomepage">{{cite web|url=http://openhpsdr.org/ | title=HPSDR Web Site}}</ref>