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प्रश्न
Is it necessary for a transmitting antenna to be at the same height as that of receiving antenna for LOS communication ?
उत्तर
No, it is not necessary for a transmitting antenna to be of same height as that of receiving antenna for LOS communication. The receiving antenna must be high enough to intercept the signals beyond horizon, which may or may not be equal to the height of transmitting antenna.
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संबंधित प्रश्न
Write a short note on surface wave propagation of electromagnetic waves.
What is space wave propagation?
Derive an expression for the maximum line of sight distance between two antennas for space wave propagation.
Mention three different modes of propagation used in communication system.
What is ground wave communication? On what factors does the maximum range of propagation in this mode depend?
Answer the following question.
In the skywave mode of propagation, why is the frequency range of transmitting signals restricted to less than 30 MHz?
The radio wave of frequency 300 MHz to 3000 MHz be.long to
Polarization in e.m wave is caused by
Propagation constant of a transmission line is
A TV transmission tower has a height of 240 m. Signals broadcast from this tower will be received by LOS communication at a distance of (assume the radius of earth to be 6.4 × 106 m)
- 100 km
- 24 km
- 55 km
- 50 km
