Raspberry Pi RTL-SDR scanner

Adafruit has just published a great way to look at the radio signals floating around you. It uses software-defined radio (SDR) to do it via a fairly cheap dongle that plugs into one of your Pi’s USB ports. The radio waves are displayed on a PiTFT screen, although I guess you could do the same thing on a regular monitor. Take a look at their tutorial here.

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