That radio receives the voices of the dead.

"In the depths of a △□ mountain in a certain prefecture, there is a small stream. If you follow this stream as a guide and proceed upward, there stands a great tree so massive that you might think it has been growing for a thousand years. Sit at the base of that tree, and on a night when the moon is not visible, take out an old radio and randomly adjust its frequency—then you can pick up a certain 'channel.'" Believing in such an urban legend, a woman ventured deep into the mountains in order to hear the voice of her beloved lover who had passed away.