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1

In 3.7.13.5, thanks to Duck Dodgers (I think) who mentioned block paths coming up twice, such as: Block paths: C:\Program Files\GNURadio-3.7\share\gnuradio\grc\blocks C:\Program Files\GNURadio-3.7\share\gnuradio\grc\blocks I too (after fresh install of 3.7.13.5) got the very long and slow-building text list of 'already exist' warnings, before finally ...


2

A low-pass filter is one way to do it. Due to the interpolation done in the repeat block, you are representing a symbol with 1000 samples, and your sample rate is 2 million samples per second (the samp_rate variable). So your square wave has a frequency of: $$ \require{cancel} {2000000\ \cancel{\text{samples}} \over \text{second}} {1\ \text{symbol} \over ...


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