Originally Posted by
FullWings
Before we castigate the crew, could this be another case of
sleeping receivers? We’ve had quite a few incidences of this in our airline...
I seem to remember that when an aircraft transmits it's receiver is "earthed". If the relay sticks reception is not possible until the aircraft transmits again and the relay probably opens.
I'm sure a radio engineer can give a more accurate description of the function.