State the two points to distinguish between sky wave and space wave modes of propagation.

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Sky waves: This works for high-frequency radio waves between 2MHz to 30 MHz. Sky Waves are reflected off the ionosphere. They are used for amateur radio and long distance aircraft and ship communication. Space waves: This is for very high frequency waves (30MHz to 300 MHz). Space Waves only travel in...
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Sky waves: This works for high-frequency radio waves between 2MHz to 30 MHz. Sky Waves are reflected off the ionosphere. They are used for amateur radio and long distance aircraft and ship communication. Space waves: This is for very high frequency waves (30MHz to 300 MHz). Space Waves only travel in straight lines (line of sight). They are used for mobile phones, two-way radio and radar. read less
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