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The relay tower consists of a radio tower and a terminal used to activate and extend the satellite dishes on the tower.
After activation, three new radio signals will become available to tune in to at specific locations in the Commonwealth.
- There are signals in this area:
- Skylanes 1665 Mayday, the last conversation between a pilot and a control tower after an engine fire, coming from Skylanes Flight 1665 to the southwest from the tower.
- Unintelligible radio signal, coming from the Hopesmarch Pentecostal Church to the northwest.
- Distress signal, coming from the southern of the two caves to the west of the tower.
Relay tower 0DB-521 appears only in Fallout 4.