Hak5 1601 – Going Deeper Into GNURadio Companion

Advanced Software Defined Radio – Shannon and Darren get deeper into GNURadio Companion on Pentoo for more RTL-SDR fun. All that and more, this time on Hak5!

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Advanced GNURadio Companion

http://gnuradio.org/redmine/projects/gnuradio/wiki

http://www.pentoo.ch/

RTL-Source: samp_rate=2M Freq=93.6e6

Replace WX GUI FFT Sink with WX GUI Waterfall Sink

Add Filters->Rational Resampler. Decimation=4. Interpolation=1.

### Note, Resamplers->Rational Resampler Base != Rational Resampler

Add Filters->Low Pass Filter. Cutoff Freq=100k. Transition Width=1M

Add Modulation->WBFM Receive. Quafrature Rate=500k. Audio Decimination=1.

Add Filters->Rational Resampler. Decimation=500. Interpolation=48.

### This will come in to play when we output to soundcard.

### Note the blue in and orange out of WBFM. IO Size. Must Match. (ie. Float vs Complex)

### Up / Down arrows to change values.

Add Audio Sink. Sample Rate=48KHz (from drop-down)

Add GUI Widgets->WX GUI Slider.

Change Variable: freq — Value=variable_slider_0

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