It's serial debugging day!

I need to get at least one of these teletypes working over RS-232 with UNIX V4 and V7 in SIMH. The SIMH docs are notoriously bad. Help would be appreciated.

#retrocomputing #vintagecomputing

@thalia Did you manage to find a source for ribbons?
@tpolecat I don't have a ribbon for 43 #1, but #2 and #3 came with their originals. If #1 works the best, I'll swap #2's ribbon to it for the demo. I think that Model 40 ribbons might be compatible and those are more readily available, but I still need to check part numbers.