I have recently bought the Katana DA20 from Aerosoft and its great. But I cannot interface the Link2fs Arduino system to it, yet I can do with fsx default aircraft.

The sim has 2 options for radio realism. One sets radio and transponder to realistic and option two sets sets it to fsx basic. The latter when set will work with Link2fs but is limited ( I.e. you cannot change the inbuilt OBS in the radio).

Has anyone else come across this and if so are there any solutions?