Packet Encoder blks2_packet_encoder from grc_gnuradio import blks2 as grc_blks2 grc_blks2.packet_mod_$(type.fcn)(grc_blks2.packet_encoder( samples_per_symbol=$samples_per_symbol, bits_per_symbol=$bits_per_symbol, access_code=$access_code, pad_for_usrp=$pad_for_usrp, ), payload_length=$payload_length, ) Input Type type float enum Complex complex fcn:c Float float fcn:f Int int fcn:i Short short fcn:s Byte byte fcn:b Samples/Symbol samples_per_symbol int Bits/Symbol bits_per_symbol int Access Code access_code string Pad for USRP pad_for_usrp enum Yes True No False Payload Length payload_length 0 int in $type out byte Packet encoder block, for use with the gnuradio modulator blocks: gmsk, dpsk, qam. Access Code: string of 1's and 0's, leave blank for automatic. Payload Length: 0 for automatic. Bits/Symbol should be set accordingly: gmsk -> 1 dbpsk -> 1 dqpsk -> 2 d8psk -> 3 qam8 -> 3 qam16 -> 4 qam64 -> 6 qam256 -> 8