What essential information must be specified when transferring radio communications?

Transferring radio communications involves critical information to ensure seamless handoffs between air traffic control (ATC) facilities. The essential details include the facility name, frequency, and location. This information is necessary for the receiving controller to understand which facility is taking over the communication, the specific frequency to listen on, and the geographic location involved in the transfer.

In aviation, the facility name ensures that everyone is aware of who is now in charge of the communications for that flight. The frequency is crucial since it indicates where the aircraft should direct their transmissions next. Finally, specifying the location provides clarity on the sector's boundaries and aids in situational awareness for all controllers involved, minimizing the risk of miscommunication or overlap in instructions.

Other options may include relevant information, but they do not encompass the essential components required for a successful communication transfer to maintain operational efficiency and safety in the air traffic environment.