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Radio Communication Protocols Flashcards

7 cards from real 911 Operator Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Radio Communication Protocols flashcards as text

  1. What does 'APCO' stand for in the context of public safety communications?

    Answer: Association of Public-Safety Communications Officials

    APCO International (Association of Public-Safety Communications Officials) is the organization that develops standards and training for public safety communications professionals.

  2. Which phonetic alphabet letter is used to represent 'W' in the NATO standard?

    Answer: Whiskey

    Whiskey is the NATO phonetic designation for 'W', used universally in public safety and military radio communications.

  3. When a supervisor transmits 'Secure the channel,' what action is typically required?

    Answer: Cease non-emergency radio traffic immediately

    Securing the channel means stopping all non-essential transmissions, typically to allow priority or emergency traffic to dominate the channel.

  4. What is a 'repeater' in public safety radio communication?

    Answer: A device that receives a weak signal and retransmits it at higher power to extend range

    A repeater receives transmissions on one frequency and simultaneously retransmits them on another at greater power, greatly extending communication range.

  5. A dispatcher hears two units transmitting simultaneously causing a 'double' or 'co-channel interference.' What is the best immediate action?

    Answer: Ask one unit to retransmit and request the other to wait

    The dispatcher should prompt one unit to retransmit while the other stands by, resolving the conflict and ensuring both messages are received.

  6. In ICS radio communications, what is the role of the 'Communications Unit Leader' (COML)?

    Answer: Plan, set up, and manage the communications system for an incident

    The COML is responsible for planning and managing the tactical communications system for an incident, including frequency assignments and equipment.

  7. What does the radio term 'ETA' stand for?

    Answer: Estimated Time of Arrival

    ETA stands for Estimated Time of Arrival, commonly used by dispatchers and field units to communicate expected arrival time at a location.