QAM Mod blks2_qamx_mod from gnuradio import blks2 blks2.$(type)_mod( samples_per_symbol=$samples_per_symbol, excess_bw=$excess_bw, gray_code=$gray_code, ) Type type enum QAM8 qam8 QAM16 qam16 QAM64 qam64 QAM256 qam256 Samples/Symbol samples_per_symbol 2 int Excess BW excess_bw 0.35 real Gray Code gray_code True enum Yes True No False in byte out complex