Which unit is used to read and control a radio station's transmitter and other technical operating parameters?

The remote control and monitoring unit is designed to provide operators with the ability to read and manage a radio station's transmitter, along with other technical parameters pertaining to its operation. This unit typically allows for remote monitoring of various metrics such as signal levels, audio quality, and operational status. By using this technology, operators can ensure that the transmitter is functioning correctly and make adjustments as necessary, all from a distance, which is crucial for maintaining broadcasting quality and compliance with regulations.

The other options do serve important functions in the overall broadcast environment. For example, a signal processor is mainly focused on the processing and enhancement of audio signals rather than controlling the transmitter itself. An audio mixer is primarily concerned with blending multiple audio inputs before they are sent to the transmitter for broadcasting. A transmission line is responsible for carrying the radio frequency (RF) signal from the transmitter to the antenna but does not involve monitoring or controlling the transmitter's operating parameters. Therefore, the remote control and monitoring unit is the most appropriate choice for managing and reading the technical parameters of a radio station's transmitter.