After you've wasted megawatts of energy sending messages into the space with no signals back. After you've spent a hundred nights listening to the radio noises and interferences. Vainly straining your ear to hear the ghostly gibberish voices looming out of far far nowhere. And here you get tired, your loneliness becomes your solitude, noises becomes your reality, you don't need this radio any more. You shut down your transmitter, tear down your antennas, let your radio get covered with dust as years pass by. But the waves you've generated will keep on travelling, dispersing through the arrays of dust, they are lonely now, cause you don't care anymore. And when someone there just like you but far far nowere will hear your messages oneday, one will know, you don't exist any more. Cause traversing time and distance is same, and all that remains after you becomes noises.