How many VHF frequencies can the RMU store?

The RMU, or Radio Management Unit, is designed for efficient communication in aviation systems. It has the capability to store a total of 20 VHF frequencies. This is particularly important for pilots and air traffic controllers, as it allows for quick access to a variety of communication channels, enhancing operational efficiency and safety. The number of frequencies is crucial for managing various communication needs during flight operations, enabling the use of different frequencies for different phases of flight, such as departure, en-route, and arrival. Storing 20 frequencies allows operators to switch seamlessly between them as required.