Definition 1 of 2
Definition
In the communication process, the transmitter is the source of the message — the person, instructor, or device that encodes an idea into words, signals, or symbols and sends it to a receiver.
Plain English
The transmitter is the one doing the sending. In a conversation it's the person speaking; in a radio it's the equipment putting the signal out.
Context Anchor
Seen in the basic communication model used in aviation instruction, and also in radio communication when a pilot’s radio sends a voice call.
Derivation
From the Latin transmittere, meaning 'to send across.' Trans- means 'across,' and mittere means 'to send.' The transmitter is whoever (or whatever) sends the message across to someone else.
Why Pilots Care
Without a working transmitter the pilot cannot request clearances, report position, or receive traffic advisories, directly affecting safety and compliance.
Intuition Check
Do not assume transmitter always means only a radio box. In this chapter, a transmitter can be any sender of a message: an instructor, a pilot, a student, or a piece of equipment.
Example Sentence 1
As the transmitter in the lesson, the instructor chose plain language so the student could follow each step.
Example Sentence 2
A weak transmitter made the call to center unreadable, so the pilot climbed to improve reception.