I tried DRM TX using gr-drm created by KIT about two years
ago. And it did transmit the right DRM signal and demodulated by
Dream software correctly.
Then I made a gnuradio flow to feed IQ samples into a fifo using
wav file sink, then Dream opened this fifo and demodulate.
This method is pretty hacking, I think you can modify the source
code of Dream directly, add libuhd support to it, then it can
run standalone without gnuradio.
Maybe you can buy a commercial DRM receiver from amazon, which
will make debug process much more easy.
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