CMOS-II Super-Keyer ( I knew the designers, got one as a beta tester (I am not too technical, I can break anything... did find a flaw in a memory boundary). The "C" description leads me to believe it is mode "A", but it is hard to tell. I'm too used to doing it. I have a manual around here somewhere. The description of the self-completing characters is what I was looking for. Tnx 73 Jan KF0Z (N0AAA) SOC 389