Which of the following is NOT part of the GMDSS operator's responsibilities during SITOR communications?

In SITOR (Serial Information and Telex Over Radio) communications, the responsibilities of a GMDSS operator are clearly defined to ensure efficient and effective communication. One of the key aspects of SITOR operations is the requirement for operators to maintain clarity and efficiency in their message transmission.

Sending unnecessary idle characters does not align with these responsibilities. Idle characters are generally not to be included as they can waste valuable communication time and can lead to confusion in message interpretation. Operators are expected to transmit only the necessary information and ensure that their communications are concise.

In contrast, ensuring characters are transmitted twice is a protocol that helps confirm that messages are received correctly, integral to maintaining reliability in communication. Requesting direct TELEX connections is also a standard practice if the situation requires a direct line for more urgent or specific data transfers. Monitoring the weather broadcasts is critical for maritime safety, ensuring operators are aware of current conditions which may affect their operations.

Overall, the focus on efficiency and clarity in SITOR communications makes sending unnecessary idle characters outside the scope of a GMDSS operator's responsibilities.