I am using xbee pro with 18F1320.
A transmitter(Xbee) with 18F1320 transmits ADC value at 9600 baud.
A receiver(Xbee) with 18F1320 receives ADC value. It then sends & displays it on PC using MAX232.
All goes well while i was using same power supply to power up transmitter, receiver & max232.
As i tried to use a separate power supply for transmitter the communication stopped.
As soon as i connect the grounds of transmitter & receiver power supply communication starts.
Is there anything i don't know about wireless communication?