Question

Radio waves in the frequency range 3 MHz – 30 MHz propagate through which mode of propagation?

• A. Surface mode
• B. Space wave mode
• C. Sky wave or ionospheric mode
• D. Ground mode

Hint:

Sky wave propagation occurs when radio waves reflect off the ionosphere.

Answer 1

The Correct Option is C

Radio waves in the frequency range of 3 MHz to 30 MHz are typically reflected by the ionosphere, leading to sky wave propagation.