Signal Sierra Romeo

Signal Sierra Romeo is a radio transmission being broadcast from broadcast tower KT8 in the Capital Wasteland, directly north of Little Lamplight and northeast of Vault 87.

Activating the broadcast
The electrical switch on a transformer next to the tower will activate the Morse code signal in a loop.

Drainage chamber
Down a cliff northeast of the tower is a drainage chamber which can be easily seen from the local map. This is one of nine drainage chambers broadcasting a Morse code signal.

Inside this tiny bunker one will find two pre-War books and some food. There are also two terminals, one broken and the other with some mixed script with the error of an "invalid decry.key" when activated. The encryption key can be found on a desk; use it on the encrypted terminal to open the trap door on the floor to the right.

Downstairs one will find the ham radio, supplying the signal, and two dead Chinese Remnant spies. In this chamber there is a mini nuke, and a Chinese Army: Special Ops Training Manual.

Morse code
The Morse code translation of the broadcast is:

-.-. --.- -.-. --.- -.-. --.- -.. . / ... .-. ... .-. ... .-. -.-

CQ CQ CQ DE / SR SR SR K

This translates to "Seeking all stations, this is... Sierra Romeo... Sierra Romeo... Sierra Romeo... Over." It is emanating from one of nine encoded broadcasting stations.