Repository for example gnuradio files.
Ref: https://github.com/sangorrin/notes/blob/master/sdr.txt
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gnuradio-spectrum-fm-nhk.grc: simple configuration that just connects the source to a FFT visualizer so that you can see a peak at 82.5MHz which is the NHK channel in Tokyo.
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gnuradio-spectrum-and-listen-fm-nhk.grc: allows decoding and listening to the FM NHK channel in Tokyo. So it includes filters, an FM receiver, an audio sink and custom sliders for tuning.
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gnuradio-spectrum-and-listen-tokyofm.grc: like gnuradio-spectrum-fm-nhk.grc but we just changed the frequency to 80Mhz, the one used by TokyoFM which is located near the Hanzomon subway station.
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gnuradio-spectrum-and-listen-tokyofm-qt.grc: like gnuradio-spectrum-and-listen-tokyofm.grc but using QT GUI widgets.
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gnuradio-spectrum-fm-nhk-qt.grc: like gnuradio-spectrum-fm-nhk.grc but using qt widgets.