Well, I figured out the channel mappings for use with my 19200 baud interface and PPJOY. Set the mappings as follows for use as a joystick, tested with Realflight.
JR A1, A2, A4, A0, A3, A5, A6, A7
Futaba A0, A1, A4, A2, A3, A5, A6, A7
Airtronics A1, A0, A4, A2, A3, A5, A6, A7
Buttons function also but make sure that those channels used for button function are set to full travel.
I'm pretty sure that these settings will work with most of the 19200 format interfaces out there.
Dennis