Mobile 2.4 GHz Spectrum AnalyzerMobile 2.4 GHz Spectrum Analyzer

Miguel writes :

The analyzer has become my best travel companion. It’s very discrete: everyone think you are playing with a mobile phone!. You can see in a moment what are the used frecuencies / channels at your location. One of the most interesting things if to carry it in the pocket in exposure mode and walk sometime in your neighborhood. In this way you can find easily what are the free frecuencies or channels. With the time, I learned how to distinguish between different device

Mobile 2.4 GHz Spectrum Analyzer: [via HackADay]