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Signal transmitter ready for transport of Mothership to Threshold. Successful transport to Threshold will enable planetary escape. Congratulations Foreman, mission salvaged, Mothership saved.
- Alien AI

The Signal Transmitter was an important battlefield building for the Scrin during the Third Tiberium War. Its primary role was summoning Motherships.


This bizarre, spiked building appears to grant Scrin Foremen access to the most advanced and dangerous air/spacecraft that the Scrin have to offer, namely their Planetary Assault Carriers and foreboding, glacially slow Motherships. Notably, the Mothership will materialize wherever this building is placed when it is summoned, and while this construction does indeed allow the summoning of a Mothership, it still comes at great Tiberium cost. The building itself also consumes a reasonable amount of power. With this building the Scrin Foreman can call down support power called Overlord's Wrath and summon Wormhole that provide teleportation between two points on the battlefield for a short time.

During the Scrin's escape from earth, the Mission AI give briefing to Foreman 371: "While completing Threshold Assembly, the construction of Signal Transmitter is your only chance for survival Foreman. First priority, complete Threshold assembly". The Signal Transmitter then summon the Mothership to be teleported into the Ichor Hub with the Threshold Tower.

Game structure

Support powers


  • The Signal Transmitter bears a resemblance to an ancient sea creature called the Hallucigenia.


See also

CNCKW Scrin logo.png Scrin Third Tiberium War Arsenal CNCKW Scrin logo.png