How do pilots receive radar advisories when simultaneous approaches are in progress?

Pilots receive radar advisories during simultaneous approaches on the tower frequency. This is because the tower controllers are responsible for managing and coordinating the arrivals and departures at the airport, especially in busy airspace where multiple aircraft might be approaching simultaneously. Using the tower frequency allows for effective communication and real-time updates regarding spacing, altitude adjustments, and any necessary changes in approach vectors.

The approach frequency is typically used for initial radar handoffs and managing traffic as aircraft are brought into the terminal environment, while the ground frequency is used for taxiing instructions on the airport surface. An operational frequency may refer to various other communication channels but is not specific to the management of simultaneous approaches. Therefore, using the tower frequency is essential for maintaining safety and efficiency during these operations.