ARLA/CLUSTER: Um SDR por 40 Dólares.

[João Costa > CT1FBF]

A $40 Software-Defined Radio

An IEEE article describes how, with some cheap hardware and free
software, you can listen-in on digital and analog signals across a
wide range of radio spectrum.

The author, radio amateur Stephen Cass KB1WNR, used a Freeview P250
dongle and a Model B Raspberry Pi microcontroller.

Watch the video and read the article at
http://spectrum.ieee.org/geek-life/hands-on/a-40-softwaredefined-radio