Question

Define ground waves sky waves and space wave .​

Answer 1

Ground wave :-

That wave which has frequencies below HF range around the curvature of earth , some-times right around the globe .

Space wave :-

That wave which has frequencies above the HF generally travels in straight lines . they propagates by means of so called space waves .

Sky wave

Waves in HF range , and sometimes frequencies just above or below it , are refracted by the ionised layers of the atmosphere and are called sky waves .

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