Hi,
thanks for reply. It s the DVD Version SP 1,2 and MM Middle Marker means Inner Marker. It`s
completely quiet. As I remember The Mkr switch is not essential for working, similar to VOR or NDB.
Here the Audio `on` works. I believe that the Problem depends on FSX itself, if the Mkr doesn`transmitt
the acrft can`t receive anything. As I`m not an expert on FSX so I don`t know where to check it out. Btw sorry my bad English.
Have a good day gtz Gunnie, Hannover Germany