Software defined radio’s can easily be used a very wideband spectrum analyzers by quickly stepping through the spectrum at the largest stable bandwidth supported. The RTL-SDR has had this functionality for some time now through software such as rtl_power and RTL Scanner.
Now Youssef, co-creator of the Airspy and programmer of SDR# has released a similar program for the Airspy called Spectrum Spy. The software comes bundled with the latest SDR# download which can be obtained from airspy.com.
20 MHz Bandwidth GSM Band
50 MHz Bandwidth GSM Band
1 GHz Full Spectrum
Over on Twitter @uhf_satcom has also been testing out Spectrum Spy and has got some good shots of Ku and L-band satellite bands.
La suite est à lire Spectrum Spy: New Spectrum Analyzer Software for the Airspy de : RTL SDR