That's right the uart ist triggering on noise.
Unfortunatelly my reciever does not have signal strength output. I am using a very cheap
Yong Horng reciver and transmitter (not a transciver).
I would need to detect a real transmition and to reject noise, but digitally, ideas???
I tried transmitting a Hi level before setting the uart to transmitt, and trying to detect this continuos hi level on the reciver before setting the reciever uart to recive, But it doesn't work that fine............
Thanks
Javier
You might have to disable the uart, and look for the preamble in software.