Relay tower 1DL-109

Relay Tower 1DL-109 is a location in the Commonwealth in 2287 in Fallout 4. The radio tower is a source of three radio signals: Boston City Works Beacon, Distress Signal and Garbled Radio Beacon.

Layout
The relay tower sits atop a rocky hill in close proximity to a water lock and a set of rail road tracks. Around the base of the tower is a Relay Tower Terminal, a toolbox containing various junk and a destroyed utility protectron lying in a puddle of oil. The terminal prompts to extend the retracted satellite dishes to amplify the signals in the surrounding area. Extending the satellites will acquire three new radio signals for the Pip-Boy Radio.

The terminal indicates the proximity to the three amplified signals from the location of the tower:
 * Boston City Works Beacon is 89 meters away and can be found by heading west towards the water lock and inside the small hatch in the operations building.
 * Distress Signal is 89 meters away and can be found by heading SE from the radio beacon until you meet the train tracks and find a train with several feral ghouls. The fourth car along (blue car, turned on its side) has a hatch to enter the train, hidden behind a bush.  If you're having difficulty finding it, it's the only bush touching the train on either side.
 * Garbled Radio Beacon is 208 meters away and can be found by heading due east from Oberland Station until you see burning trees and a crashed alien spaceship, then following the green blood trail to an unmarked cave.

Appearances
Relay Tower 1DL-109 only appears in Fallout 4.