Transmitter
Transmitter might refer to:

 E-band transmitter, transmitted signals in the electromagnetic spectrum
 Neurogenic transmitter, transmitted neurogenic fields to produce dreams
 Private transmitter, a communications device used by private individuals
 Radio transmitter, transmitted signals in the electromagnetic spectrum
 Subsonic transmitter, transmitted sounds below the hearing threshold
 Subspace transmitter, transmitted information through the medium of subspace
 Synaptic transmitter, transmitted pulses to create memories
 Temporal transmitter, transmitted through time
 Visual acuity transmitter, tied in with Geordi La Forge's VISOR

You may also be looking for:
 Communicator, a portable device used for transmitting signals

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