Probe MPSK SNR gr_probe_mpsk_snr_c from grc_gnuradio import blks2 as grc_blks2 grc_blks2.probe_mpsk_snr_c( type='$type', alpha=$alpha, probe_rate=$probe_rate, ) set_alpha($alpha) set_probe_rate($probe_rate) Type type enum SNR snr Signal Mean signal_mean Noise Variance noise_variance Alpha alpha 1 real Probe Rate probe_rate 10 real in complex out float