Which key term is used to indicate agreement in radio communication?

Prepare for the NORAC Test. Study with flashcards and multiple choice questions, complete with hints and explanations. Gear up for your railway operating rules exam!

In radio communication, "Roger" is the key term used to indicate agreement or that a message has been received and understood. The term originates from the phonetic alphabet used during World War II, where "Roger" represented the letter "R," which stands for "received." This term has since been widely adopted in various fields, including railway and aviation communication, to ensure clarity and brevity.

Using "Roger" is important for effective communication because it confirms to the sender that their message has been acknowledged. While other phrases like "Affirmative," "Copy that," and "Understood" may also serve similar purposes, "Roger" is specifically recognized in standard radio etiquette and is a widely accepted affirmation in communication protocols.

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