Shipbreaker's radio frequency

Shipbreaker's radio frequency is a radio signal in the Fallout 4 add-on Far Harbor, used to start the quest Shipbreaker.

Background
The radio signal can be picked up randomly while roaming the island. After tuning into the frequency, the player will be prompted with speaking to Old Longfellow about a sea creature known as Shipbreaker. The broadcast consists of strange noises, resembling wading, which intensify as the player draws closer to shipbreaker.