Add flowgraph for Unknown transmissions and AMSAT EA satellites

Nestoras Sdoukosrequested to merge
nsdoukos/satnogs-flowgraphs:genesis into master

  • The unknown_transmission flowgraph will be used for observations of mode 'UNKNOWN' or for observations without a specific flowgraph. It is a clone of the 'fm.grc' used until now without the limitation of the maximum observable bandwidth being 48e3. If the bandwidth is set to a higher value no audio file is generated. A max theoretical doppler is calculated, as in all other flowgraphs, hence it must be lower than the sampling rate. The observable bandwidth is passed through the baudrate parameter.

  • The genesis_fsk flowgraph will be used for AMSAT EA satellites providing only sound for decoding with external tools

Signed-off-by: Nestoras Sdoukos sdoukos@libre.space

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