Which term imposes silence on the frequency due to distress?

• A. Seelonce
• B. Stop Transmitting
• C. Quiet
• D. Silence

Answer: (A)

When distress traffic needs to get through on a radio channel, the procedure uses a formal directive to hold the frequency clear. The term Seelonce is the command that imposes silence on the channel, allowing only the distress messages to be transmitted and heard without normal transmissions interfering. The station in distress (or the controlling authority) can apply Seelonce (often paired with Mayday) to stop other stations from transmitting until the situation is under control. Other phrases like Stop Transmitting or generic words such as Quiet or Silence aren’t standard formal directions in this context, so they don’t carry the official channel-hold effect.