Flowgraph used to create a basic spectral display. This is used to demonstrate how a spectral display is created using the FFT and Complex to Mag^2 blocks.
This flowgraph demodulates a FM broadcast station. It demonstrates using the "Complex to Arg" block. The blocks from the output of the lowpass filter to the output of the "Multiply Const" block are equivalent to the "Quadrature Demod" block.