What is space wave communication? Write the range of frequencies suitable for space wave communication.

(b) 10 MHz For beyond-the-horizon communication, it is necessary for the signal waves to travel a large distance. 10 KHz signals cannot be radiated efficiently because of the antenna size....

(d) Space waves  Owing to its high frequency, an ultra high frequency (UHF) wave can neither travel along the trajectory of the ground nor can it get reflected by the ionosphere....

Informal communication is known as grapevine. This is because informal communication spreads throughout the organisation in all directions without following the formal path of communication.

(d) 100 m. Explanation: In the first case Range = 50 = (u2 /g) Sin(2x15°) = (u2 /2g)  => (u2 /g)=100  In the second case range = (u2 /g) Sin(2x45°) = (u2...

76–890MHz. Speed of waves is same for TV waves and light waves.

Range of frequencies used for satellite communication  5.925 - 6.425GHz (Uplink)  3.7 - 4.2GHz (Downlink)  Speed of wave is same for these waves and light waves.

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...

The mode of wave propagation in which wave glides over the surface of the earth is called ground wave communication.  The maximum range of propagation in this mode depends on  (i) transmitted...

To avoid mixing up of signals from different transmitters. This can be done by modulating the signals on high frequency carrier waves, e.g. frequency band for satellite communication is 5.925–...

Personal communication means a communication between two persons either through oral, letter or through telephone etc, while mass communication includes the use of radio, television, press, films etc, for wider...