I have my kit reading my home-made sensors now and I want to buy a 328p and send data to it. I also make my own rf links and they are transmitting mono audio now.

Can I just connect the serial TX to one and the RX to the other or do they have to communicate both ways. If they need both channels then I could make my links into tranceivers and maybe switch them. If this sounds too hard I can always buy some factory made RF links made for this.

I am trying to decide weather to make my links into tranceivers or just buy some.