Introduction into wireless communications with AVR

Hello everyone!

Lately I have been working on expanding my knowledge of working with ATtiny and ATmega AVR chips and I would like to begin utilizing RF with my little projects.

I have set myself a design task to learn from, as I am one of those "ADHD engineers that only learn via hands on and head banging on datasheets".



My current task is to make unit A send a message that contains an ID code and status code (20 [B]bit[/B] ID code, 4 [B]bit[/B] status code). Later on I will make unit B receive this data and interpret it.

What would you suggest I use as a simple, beginner, TX and RX unit? Any tips?

Thanks in advance!

EDIT: I am searching around and working on my design goals and I have added a new requirement onto myself. I need the RX unit to be able to handle and process multiple TX units with diffrent IDs at the same time.