Distress signal (Relay tower 0SC-527)

Distress signal is a radio station in Fallout 4. It can be picked up after extending the satellites at relay tower 0SC-527.

Location
The origin of the broadcast is a ham radio in a secret room in the basement of Fallon's department store. The secret room is located behind a bookcase in the northwestern corner, and can be accessed by pressing a red button underneath the counter of the jewelry store in the basement. Inside are a great deal of locked safes and the broadcasting ham radio.