Question 230 Deck Safety

The correct answer is B) the frequency band selected and time of day or night. The range of an SSB (single sideband) transmission is most affected by the frequency band selected and the time of day or night. Higher frequencies generally have better range during the day, while lower frequencies perform better at night. This is due to the changes in the ionosphere, which affects the propagation of radio waves. The time of day influences the ionization of the upper atmosphere, which in turn impacts the refraction and absorption of the radio signals. The other options are incorrect because: A) Interference and position of the moon have minimal impact on the range of an SSB transmission. C) Atmospheric noise and radiated power can affect range, but are not the primary factors. D) Radiated power and nearness to shore are not the most significant factors affecting SSB transmission range.