Subspace communication

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An analysis of a subspace com wave.

Subspace communication (also called subspace radio) is the primary form of communication used throughout the Federation.


By transmission through subspace rather than normal space, subspace communication permitted the sending of data and messages across interstellar distances faster than the speed of light.
This technology is much more practical than conventional radio. In fact, after the invention of subspace communication, starships rarely even monitored frequencies that traveled slower than the speed of light.


Subspace communication was mainly used by Star Fleet Command to transmit orders to commanding officers of starships on deep-space assignments.
Likewise, the vessels' commanding officers used subspace communication to relay reports on their various missions back to Star Fleet Command, to ask for suggestions, and/or to make requests.


Depending on the actual distance between a vessel and the nearest subspace relay beacon, real-time communication was possible.


Subspace communications had a varying degree of band frequencies, from upper (or high-band) to lower.