Ham Radio General Class Practice Test 2025 – Complete Exam Prep

Question: 1 / 545

What is a characteristic of HF scatter signals?

They have high intelligibility

They have a wavering sound

HF scatter signals are unique in their behavior due to the way they interact with the ionosphere and various obstacles. One of the defining characteristics of these signals is that they often exhibit a wavering sound, which is a result of the signal bouncing off of irregular surfaces, such as mountains or buildings, or being refracted by varying atmospheric conditions. This wavering can be heard as changes in the pitch and volume of the signal, making it distinct when compared to more stable signals.

While high intelligibility may be desirable in communication, HF scatter signals can often lack clarity and instead convey a sense of variability. The presence of very large swings in signal strength can also occur, yet it is the wavering sound that is primarily noted when describing HF scatter. Thus, the characteristic that best defines HF scatter signals is the wavering sound, highlighting the unique propagation properties of HF frequencies under certain conditions.

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They have very large swings in signal strength

All of these choices are correct

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