Software defined radio receiver

 Gqrx supports many of the SDR hardware available, including Funcube
 Dongles, rtl-sdr, HackRF and USRP devices.
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 Includes AM, SSB, FM-N and FM-W (mono and stereo) demodulators, and
 Special FM mode for NOAA APT. Displays FFT plot and spectrum waterfall.
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 It is powered by GNU Radio and the Qt GUI toolkit.