A long-range tachyon scanner is a sensor technology capable of detecting cloaked vessels at extreme distances.

In 2375, a fleet of ten Jem'Hadar fighter utilized such a scanner to pursue a group of Klingon Birds-of-Prey which were returning to Federation space after conducting a cavalry raid behind Dominion lines. (DS9: "Once More Unto the Breach")

See alsoEdit

• Tachyon detection grid