Transmitter and receiver module on the same UNO board

I’m trying to use VirtualWire and a transmitter-receiver 433 RF link kit on the same UNO Arduino board, but it doesn’t work. Anyone knows if it’s even possible.
Yeah, I know that I had better using a transceiver, but I have this modules and I am trying to implement my own simple transceiver this way… Any ideas?
Thanks everyone for your help!!!

In other posts, I think I've seen that they can't share a ground (e.g. be in the same circuit.) I also tried to do this and could not get it to work until I put them on different Arduino's (which of course defeats the purpose for you).