Caravan distress frequency

Caravan distress frequency is a radio signal in Fallout 4. It can be received after starting the quest Mechanical Menace.

Location
The signal can be listened to anywhere in the Commonwealth. You can tune to it in the RADIO tab of the Pip-Boy.

Bugs
If this radio station is not listened to immediately after the quest Mechanical Menace spawns, then it may fail to play, preventing the quest from moving to the next step and the quest marker at Wattz Consumer Electronics from spawning. It will still be possible to travel to the caravan's location and engage in the battle. It is unclear whether this bug is triggered by fast travel or loading of an environment in general. Also happens in Xbox One