The XXX.LOG file has sample communication data to and from the controller The ***.XLS file has info for the program. It has the structure for the command format. ALFARAK.EXE Sample Azimuth control program for Windows ALFARAK.TXT Sample Azimuth control source for Windows ALFARAS.EXE Sample Elevation and Azimuth control program for Window ALFARAS.TXT Sample Elevation and Azimuth control source for Window log_of_commands_to_alfaspid_AZ-EL_controller.LOG Program_format-2005-08-10.pdf Program_format-2005-08-10.xls Program_format_p2-2005-08-10.pdf README.txt This file Contact Alfa Radio ltd. at 780 466 5779 for more info or alfa@alfaradio.ca J. T. Mitchell (Mitch) VE6OH