OK, I will include windows ports 1 - 12... did not know
port 11 existed :-)
This is exactly the info we need to find the bugs...
Bug #4: Incorrect COM port list
Rigport offers COM2..COM8. Only ports 3, 7 and 11 actually exist. I
wanted to select COM11, as I have standardized on this port for all
PTT Port. Offers a selection of ports, including the expected ports 3, 7
and 11. No problem.