Long-distance radio broadcasts use short-wave bands. Why? – InterviewSolution

InterviewSolution

1.	Long-distance radio broadcasts use short-wave bands. Why?
Answer» The shortwaves (wavelength less than 200m or frequencies greater than 1,500 kHz) are absorbed by the earth due to their high frequency but are effectively reflected by Flayer in the ionosphere. After reflection from the ionosphere, the short waves reach the surface of earth back only at a large distance from the transmitter. For this reason, short waves are used in long distance transmission.

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