Keep 1 in N gr_keep_one_in_n from gnuradio import gr gr.keep_one_in_n($type.size*$vlen, $n) set_n($n) Type type 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 N n 1 int Vec Length vlen 1 int $n > 0 $vlen > 0 in $type $vlen out $type $vlen