iFrogLab 2.4G Spectrum Analyzer USB dongle, USB portable spectrum analyzer, why do you need to spend US$1500 to buy... 22 Mar iFrogLab 2.4G Spectrum Analyzer USB dongle admin | 2.4G Spectrum | 0 iFrogLab 2.4G Spectrum Analyzer USB dongle, USB portable spectrum analyzer, why do you need to spend US$1500 to buy...