Packet Encoder blks2_packet_encoder from grc_gnuradio import blks2 as grc_blks2 from gnuradio import gr grc_blks2.packet_encoder( item_size_in=$type.size*$vlen, 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 size:gr.sizeof_gr_complex Float float size:gr.sizeof_float Int int size:gr.sizeof_int Short short size:gr.sizeof_short Byte byte size:gr.sizeof_char 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 -1 int Vec Length vlen 1 int $vlen > 0 in $type $vlen out byte Packet encoder block, for use with the gnuradio modulator blocks: gmsk, psk, qam. Access Code: string of 1's and 0's, leave blank for default. Bits/Symbol should be set accordingly: gmsk -> 1 dbpsk -> 1 dqpsk -> 2 d8psk -> 3 qam8 -> 3 qam16 -> 4 qam64 -> 6 qam256 -> 8