I downloaded and installed RUMTrol746Pro on my Windows PC. I was looking forward to finally have a decent program to back up my 746 Pro's memories and settings.
But I can't get the program to work... I think I've tried every possible combination of settings in the COM port setup screen; but I just can't read or write anything from/to the radio.
Several other programs (Swisslog, MixW, N1MM logger, Ham Radio Deluxe, etc...) are working fine; so I'm sure that the interface (a trimmed down version of the CT-17) works.
I'm using 19k2 and the default 66h address. In N1MM I'm using DTR always on and RTS always on.
I could use some help

Thanks, 73,
Gert - K5WW