Civil Alert System broadcast

The  is a localized radio alert broadcast that can be tuned into throughout a portion of the Commonwealth, in Fallout 4.

Characteristics
This signal is first discovered when the Sole Survivor activates the relay dishes at relay tower 0BB-915. The source of the signal can then be tracked to a ham radio inside a military bunker at the base of the southwestern satellite at the Fort Hagen satellite array.

Appearances
The appears only in Fallout 4.