What word is typically used at the end of a radio transmission when an answer is expected?

The term "OVER" is commonly used at the end of a radio transmission to indicate that the speaker has finished speaking and is awaiting a response from the recipient. This term signals that the communication is complete and that the receiving party is invited to respond.

Using "OVER" is a standard practice in radio communication, which helps to clarify when one party has finished their message and allows for efficient back-and-forth dialogue. This is essential in ensuring that messages are received and understood correctly in potentially noisy or distracting environments where radio communications occur.

The other terms, while relevant in different situations, do not serve the same function. For example, "ROGER" indicates that a message has been received and understood but does not imply a need for a reply. "WAIT" implies that the speaker needs the other party to hold on for a moment without needing an immediate answer, which does not invite further communication in the same manner. "CONFIRM" requests verification of information but does not structure the communication as a two-way exchange in the way "OVER" does.