Hi, for the project mentioned above (Distributed co-ordinated fire-fighting robot),i heard that a RF transmitter and Receiver( using ASK,FSK) can be used for communicating between the robots and cheaper and easier to work than CC2500 module.But i doubt whether it( RF transmitter ,receiver using ASK,FSK ) has support for differentiating various frequency operated messages,so that a message from robot1 is received only by the particular robot2. Please give me details regarding it..