Hi Karel, Yes, I have seen it and also tried it under wine on the pc here (it worked without tweaking this time). MIL-STD-188-110B is interesting and very robust. But, RFSM8000 is a commercial product and way off topic here... Btw, as its now a commercial product it should be compared to other similar offerings. Among those I am thinking abt Skysweep messenger: http://www.skysweep.com/skysweep_messenger.htm I did receive STANAG 4285 code from Charles Brain and I hope I can get some time off to get that in nice working order. I would really like to have a GPL-modem like this. But, then we have the wide vs narrow modem comparison and at the moment I think PSK250 is quite interesting too. So many fun things to do and so little time... 73 de Per, sm0rwo