Hi Dave
1) If you check the advanced box in the Packet TX tab you can set the packet interval manually or use the default value given by SmarRF Studio
2) To save the received data to a file (txt) you need to firat open a txt file to dump the data to. This can be done by pressing the button on the left of the "Dump data file:" window (see screenshot below). Choose a file name and press open in the dialog box that appears. Now all received data will be dumped to that file as soon as the radio has finished RX.
