Echo: Galaxy City Beacon Badge
From City of Heroes: Rebirth - Wiki
Description
You have unlocked the capability of creating a teleport beacon to Echo: Galaxy City.
How to Get
One earns the Echo: Galaxy City Beacon supergroup badge by visiting each of the following Echo: Galaxy City exploration badge locations while in supergroup mode:
Note that visiting these locations while not in supergroup mode will not advance towards earning this beacon badge, even though it will earn the personal exploration badge for that marker.
Location
The Echo: Galaxy City Beacon location is (-533.5, 20, -1258), on the northwest corner of the Arena.