Advertisements
Advertisements
प्रश्न
What do you mean by skip distance?
उत्तर
A skip distance is the distance a radio wave travels, which typically includes a hop in the ionosphere. A skip distance is the distance between two sites on the Earth's surface where radio waves from a transmitter descend after being refracted downwards by different layers of the ionosphere.
APPEARS IN
संबंधित प्रश्न
Write a short note on surface wave propagation of electromagnetic waves.
Explain the ground wave propagation and space wave propagation of electromagnetic waves through space.
The radio wave of frequency 300 MHz to 3000 MHz be.long to
An antenna is
Polarization in e.m wave is caused by
In which frequencies range space waves are normally propagate:-
The characteristic impedance of a coaxial cable is of the order of
What is the value of frequency at which an e.m wave must be propagated for the D-region of atmosphere to have a refractive index of 0.49? Electron density for D-region is 109 m-3:
Three waves A, B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication ______.
The maximum frequency for reflection of sky waves from a certain layer of the ionosphere is found to be fmax = 9(Nmax)1/2, where Nmax is the maximum electron density at that layer of the ionosphere. On a certain day, it is observed that signals of frequencies higher than 5 MHz are not received by reflection from the F1 layer of the ionosphere while signals of frequencies higher than 8 MHz are not received by reflection from the F2 layer of the ionosphere. Estimate the maximum electron densities of the F1 and F2 layers on that day.