CrossRoads:
Virtuawire cannot send to itself on the same uC. You need two.
Hey,
thanks for your answer. I think I'm going to try it with an raspberry Pi as the receiver then. For anyone interested / having the same problem, this is the guide I'm going to follow:
http://www.homautomation.org/2013/09/21/433mhtz-rf-communication-between-arduino-and-raspberry-pi/
greets,