39    int d_samples_per_chip;
 
   40    int d_samples_per_symbol;
 
   41    gr::tag_t d_timestamp;
 
   42    gr::msg_queue::sptr d_queue;
 
   43    std::ostringstream d_payload;
 
   48    int work (
int noutput_items,
 
   49              gr_vector_const_void_star &input_items,
 
   50              gr_vector_void_star &output_items);