spgram|example: cleaning example
spgram|example: cleaning example

  * adding spectral notch
  * data subcarriers are QPSK
  * adjusting plot scale

JayKickliter/liquid-dsp,wangning223/liquid-dsp,biotrump/liquid-dsp,biotrump/liquid-dsp,jgaeddert/liquid-dsp,jgaeddert/liquid-dsp,biotrump/liquid-dsp,jgaeddert/liquid-dsp,wangning223/liquid-dsp,cjcliffe/liquid-dsp,JayKickliter/liquid-dsp,andrepuschmann/liquid-dsp,jgaeddert/liquid-dsp,biotrump/liquid-dsp,manuts/liquid-dsp,cjcliffe/liquid-dsp,andrepuschmann/liquid-dsp,manuts/liquid-dsp,JayKickliter/liquid-dsp,cjcliffe/liquid-dsp,JayKickliter/liquid-dsp,jgaeddert/liquid-dsp,cjcliffe/liquid-dsp,manuts/liquid-dsp,cjcliffe/liquid-dsp,biotrump/liquid-dsp,andrepuschmann/liquid-dsp,andrepuschmann/liquid-dsp,JayKickliter/liquid-dsp,manuts/liquid-dsp,manuts/liquid-dsp,wangning223/liquid-dsp,wangning223/liquid-dsp,wangning223/liquid-dsp,andrepuschmann/liquid-dsp