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For all radio transmissions, see Fallout 3 radio stations.


Signal Sierra Romeo is a transmission from broadcast tower KT8 located directly north of Little Lamplight and northeast of Vault 87.


Upon activation of the tower, the transmission will begin. Down a cliff northeast of the tower is a drainage chamber which is where the signal originates.

In the chamber there are two pre-War books and a motorcycle handbrake and motorcycle gas tank, Pork n' Beans and Sugar Bombs. There are two terminals, one broken and the other with some mixed script with the error of an "invalid decry.key" when activated. On the third desk lies the encryption key. It can be used on the encrypted terminal to open the trap door on the floor to the right.

Downstairs one will find the ham radio signal source and two dead Chinese remnant spies. In this chamber, there's also a mini nuke, a Chinese Army: Special Ops Training Manual, a Chinese commando hat, two bottles of purified water under the desk, and various other objects.

Morse code

The station's message utilizes Morse code, played on a loop via the radio. The Morse code pattern from this towers equates to: CQ CQ CQ DE SR K. The translations are as followed.[1]

Code Letter equiv Translated Meaning
-.-. --.- CQ "Calling all stations, any station" A general non-emergency call, indicating that the station is looking for a reply from any station that can hear it.
-.. . DE "From" or "this is"" Identifying the sender, followed by the station's ID or callsign repeated two or three times.
... .-. SR Station's ID This is where the call sign is broadcast. Two letters long, correspond to station name.
-.- K Invitation to transmit The transmitter will pause and wait for a reply from another station.


  • Upon exiting the drainage sewer, an Enclave vertibird passes overhead and is destroyed by a missile launched from a super mutant brute.
  • Items stored in containers here are safe.