Radio and microwave signals with a low-end frequency (below 2MHz) use _______ propagation.

Radio and microwave signals with a low-end frequency (below 2MHz) use _______ propagation.

Radio and microwave signals with a low-end frequency (below 2MHz) use _______ propagation.




a. Line-of-sight
b. Switched
c. Ground
d. Sky






Answer: C


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