Angel Radio

Angel radio is Dean's nickname for the conversation between angels that other angels can hear. Unusually, Metatron also refers to it as "angel radio" in 8.22 Clip Show.

The phenomenom is first named by Dean in 4.09 I Know What You Did Last Summer. when he and Sam find Anna Milton, who has escaped from a psychiatric hospital. She describes how she can hear the angels talking. Dean responds: "So, they lock you up with a case of the crazies when really you were just... tuning in to angel radio?"

In 5.16 Dark Side of the Moon, when Sam and Dean are in Heaven, Ash describes how he has rigged up a laptop to overhear and translate the angel's speaking in Enochian - what he calls a "holy-rolling police scanner."

In 9.01 I Think I'm Gonna Like It Here, Castiel, like Anna, can hear the angels even though he has lost his grace and is human.

In 9.23 Do You Believe In Miracles?, Metatron sets up a radio in his office to broadcast to all angels on Earth and in Heaven across all frequencies of angel radio to let them know he is traveling to Earth and closing the portal while he is gone. When confronting Castiel in his office, he doesn't realize Castiel has activated the microphone and Metatron's true intentions and opinion of the angels are broadcast to everyone, leading to his downfall.