What is the function of a transmitter in avionics systems?

The function of a transmitter in avionics systems is to accept information, which can include data such as voice, telemetry, or other signals, and convert it into a radio frequency (RF) signal for transmission. This process involves modulating the original information onto a carrier wave that can travel through the air over a significant distance. The RF signals produced by the transmitter can then be sent to a receiver, where the original information can be demodulated and understood.

In contrast, receivers are responsible for capturing existing signals rather than transmitting new ones, amplifiers boost the strength of radio waves but do not create new signals from data, and navigation systems are controlled by separate devices, not the transmitter itself. By transforming and sending information across distances, transmitters play a critical role in enabling communication and data exchange within avionics systems.