Which frequency is used for the international voice on-scene frequency?

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Multiple Choice

Which frequency is used for the international voice on-scene frequency?

Explanation:
The main idea is that there is a designated long-range voice channel used for coordinating search-and-rescue operations at the scene. This specific international on-scene voice frequency is 5680 kHz, chosen in the HF spectrum to provide reliable, real-time voice links over distances beyond VHF ranges and to keep on-scene traffic clear from local channels. The other frequencies listed are not designated for this purpose; they may be used for different services or purposes. So, 5680 kHz is the correct choice.

The main idea is that there is a designated long-range voice channel used for coordinating search-and-rescue operations at the scene. This specific international on-scene voice frequency is 5680 kHz, chosen in the HF spectrum to provide reliable, real-time voice links over distances beyond VHF ranges and to keep on-scene traffic clear from local channels. The other frequencies listed are not designated for this purpose; they may be used for different services or purposes. So, 5680 kHz is the correct choice.

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