Mike, A much simpler program (I believe) would be a Windows GUI for sending QRSS/DFCW. I could really use a QRSS/DFCW program that had an audio tone as an output rather than toggle a line on the serial port. -- 73 Warren K2ORS WD2XGJ 136-140kHz WD2XSH/23 505-510kHz WE2XEB/2 160-189kHz WE2XGR/1 505-515kHz FN42hi http://www.w4dex.com/wd2xgj.htm