Editing Software-defined radio (section)

=== RTL-SDR ===
[[File:DVB-T USB dongle with RTL2832U and R820T.jpg|thumb|Internals of a low-cost [[DVB-T]] USB dongle that uses Realtek RTL2832U (square IC on the right) as the controller and Rafael Micro R820T (square IC on the left) as the tuner]]

Eric Fry discovered that some common low-cost [[DVB-T]] USB dongles with the Realtek RTL2832U<ref>Using DVB USB Stick as SDR Receiver http://sdr.osmocom.org/trac/wiki/rtl-sdr</ref><ref>RTL-SDR Blog http://www.rtl-sdr.com</ref> controller and tuner, e.g. the Elonics E4000 or the Rafael Micro R820T,<ref>Support for the Rafael Micro R820T tuner in Cocoa Radio https://housedillon.com/blog/support-for-the-rafael-micro-r820t-tuner-o-cocoa-radio/</ref> can be used as a wide-band (3&nbsp;MHz) SDR receiver. Experiments proved the capability of this setup to analyze [[Perseids|Perseids meteor shower]] using [[Graves (system)|Graves radar]] signals.<ref>{{cite web|url=http://www.eb3frn.net/?p=141|title=Perseids shower using graves radar|work=EB3FRN|date=7 October 2013 }}</ref> This project is being maintained by the [[Osmocom]] project.