Hi. I'm working on a project that requires wireless data transfer back and forth between 2 PICs. We are using two kits of wireless to do this so each PIC is connected to a transmitter and a receiver. The problem is both separate kits operate over the same frequency so we need to figure out how to turn one off, or somehow make it so the signal does not get sent to the wrong receiver.
Here are the schematics for the kits we are using: http://www.rentron.com/Files/CIP-8.pdf

 

Control the Transmit enable \(\overline{TE}\) on the receiving side with the PIC. Establish a protocol to define what received sequence says "I'm done sending, you may transmit".

There are ASCII characters for that, inherited from teletype days, but the chosen IC's alolow any charset/protocol to be used.