Which frequency range is suitable for sky wav | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Sky wave propagation involves the reflection of radio waves by the ionosphere back to the Earth's surface.This mode of propagation is effective fo

Vedclass · Accepted Answer

$2 	ext{ MHz}$ to $20 	ext{ MHz}$

Vedclass · Answer

(B) Sky wave propagation involves the reflection of radio waves by the ionosphere back to the Earth's surface.This mode of propagation is effective for frequencies in the range of approximately $2 	ext{ MHz}$ to $30 	ext{ MHz}$.Frequencies below $2 	ext{ MHz}$ are absorbed by the ionosphere,while frequencies above $30 	ext{ MHz}$ (like those used in space wave propagation) penetrate the ionosphere and escape into space.Therefore,the range $2 	ext{ MHz}$ to $20 	ext{ MHz}$ falls within the suitable band for sky wave propagation.

Which frequency range is suitable for sky wave propagation?

Similar Questions

Which type of medium is used for optical communication?

Three signals related to amplitude modulation are shown in the figure. The correct assignment of the signals is

If in an amplitude modulated wave,the maximum amplitude is $14 \ V$ and the modulation index is $0.4$,then the amplitude of the carrier wave is (in $V$)

Long range radio transmission is possible when the radio waves are reflected from the ionosphere. For this to happen,the frequency of the radio waves must be in the range:

For $VHF$ signal broadcasting,what is the maximum service area in $km^{2}$ that will be covered by an antenna tower of height $30\, m$,if the receiving antenna is placed at the ground? Let the radius of the earth be $6400\, km$. (Round off to the nearest integer) (Take $\pi$ as $3.14$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module