Here is a tidbit of info for future reference...
The FT-900 has been used successfully (by me) with CT (ver. 9.02). To
control the '900 with CT (ver. 9.02), select the Yaesu FT-890 from CT's list
of rigs.
(The FT-900 does not appear on the list of rigs in this version of CT.)
Perhaps someone will find this information useful.
73, -- Glenn KB1GW
gswanson@arrl.org