Question 231 Deck Safety

The correct answer is D) During darkness. The reason for this is that during the night or darkness, the ionosphere layer in the Earth's atmosphere reflects the SSB radio signals more effectively, allowing them to travel further and have a longer transmitting range. This is due to the different conditions in the ionosphere during the day versus night, which impact the propagation of the radio waves. The other options are incorrect because: A) and B) daylight hours have less favorable ionosphere conditions for long-range SSB transmission, and C) at noon the ionosphere conditions are not as optimal as during the night for SSB range.