No, I'm sure about ACARS. It's not TCAS that I want.
That's what I supposed. There are no simple ACARS units available for the GA. What I want to do is writing simple text messages while in flight. Like a SMS service for GA. Maybe a unit with a built-in COM3 and an external keyboard.
I'm not interested in sending fuel, maintenance, WOW data, digital clearances etc etc.
Anyone?