Thanks Erik for your reply-I also received a quick reply from Roman at Expert Electronics saying the same thing about upgrading the windows 10 inside the MB-1.
I own the Flex 5000A and the Anan 200D SDR radios (both, which I like a lot) but the MB-1 seems very interesting with the built in PC and knobs-or-mouse operation feature.
Wonder if anyone out there has operated the Flex 5000 or the Anan radios and then the MB-1, and might be able to point out the differences between their operating experiences?
Thanks,
Terry