Subspace frequency

Subspace frequency 87

A subspace frequency was a specific frequency used for subspace communication.

In 2266, Harcourt Fenton Mudd used subspace frequency three-nine to contact Rigel XII with a communicator aboard the USS Enterprise. (TOS: "Mudd's Women")

In the final draft script of "Mudd's Women", this frequency was instead called "sub-space B three nine".

The next year, Captain James T. Kirk asked Lieutenant Uhura to contact a private transmitter designated GSK-783 on subspace frequency three. (TOS: "Operation -- Annihilate!")

When Captain Picard told Commander Riker to send a message to Starfleet to obtain more information about a particular group of three renegade Klingons led by Captain Korris, Riker told Picard that the message would need forty-eight hours from their current position on subspace frequency. (TNG: "Heart of Glory")

When an initial test of the wormhole relay station produced no results, a team who were trying it conducted a second test using a different subspace frequency. (DS9: "Destiny")

In 2374, Tuvok detected a power surge in the subspace frequency range after Kathryn Janeway initialized a level four induction relay overload of the computer. (VOY: "Concerning Flight")