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 three signals in this area:
- 天路航空第1665號班機求救訊號, 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.
- 無法理解的無線電訊號, coming from the Hopesmarch Pentecostal Church to the northwest.
- 求救訊號, coming from the southern of the two caves to the west of the tower.
Relay tower 0DB-521 appears only in Fallout 4.