Question

What is sky wave communication? Why is this mode of propagation restricted to

the frequencies only up to few MHz?​

Answer 1

$ANSWER$

⭐Space wave propagation is defined for the radio waves that occur within the 20km of the atmosphere ie; troposphere, comprising of a direct and reflected waves. These waves are also known as tropospheric propagation as they can travel directly from the earth's surface to the troposphere surface of the earth.

⭐For frequencies higher than few MHz, the sky waves penetrate the ionosphere and are not reflected back.

hope it will help u

Answer 2

Answer:

Sky wave propagation is a mode of propagation in which communication of radiowaves in frequency range 30MHz - 40MHz takes place due to reflection from the ionosphere. For frequencies higher than few MHz the sky waves penetrate the ionosphere and are not reflected back.

Explanation:

Hopefully helpful to you,,(✿ ♡‿♡)(✿ ♡‿♡)