What call sign is used for Tower Control?

The call sign used for Tower Control is "TOWER" because it is the standard term used in air traffic control to indicate the controller managing the air traffic for a specific runway and active approach/departure pattern at an airport. The responsibility of Tower Control includes the coordination of aircraft movements on the runway and in the immediate vicinity of the airport, ensuring safe takeoffs and landings.

This particular terminology helps distinguish the functions of different areas of air traffic control. For example, "GROUND" is used for controllers managing movements on the taxiways and ramp areas, while "RADIO" and "APRON" refer to other functionalities that do not specifically pertain to controlling air traffic during takeoff and landing phases. Thus, "TOWER" is the dedicated call sign that directly relates to the critical tasks performed by the airport tower controllers.