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What is the line of sight communication?...

What is the line of sight communication?

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A space wave travels in a straight line from transmitting antenna to the receiving antenna. This is known as line of sight communication.
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CHHAYA PUBLICATION-COMMUNICATION STSTEM-CBSE SCANNER
  1. Write two basic modes of communication. Explain the process of amplitu...

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  2. Write the function of the following in communication system: Receive...

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  3. Write the function of the following in communication system: Demodul...

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  4. Write the function of a transducer in communication system:

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  5. Distinguish between 'sky wave' and ' space wave' modes of propagation....

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  6. Draw a block diagram of a simple modulator for obtaining amplitude mod...

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  7. A signal of 5 kHz frequency is amplitude modulated on a carrier wave o...

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  8. Why is baseband signal not transmitted directly? Give any two reasons...

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  9. What is space wave propagation? State the factors which limit its rang...

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  10. Distinguish between a transducer and a repeater.

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  11. Which basic mode of communication is used in satellite communication? ...

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  12. What is the line of sight communication?

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  13. Why is it not possible to use sky waves for transmission of TV signals...

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  14. Difine the term 'amplitude modulation'. Explain any two factors which ...

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  15. How is amplitude modulation achieved ?

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  16. The frequencies of two side bands in an AM wave are 640 kHz and 660 k...

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  17. Given three reasons why modulation of a message signal is necessary fo...

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  18. Show graphically an audio signal, a carrier wave and an amplitude modu...

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  19. A carrier wave of peak voltage 15 V is used to transmit a message sign...

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  20. Which mode of propagation is used by short wave broadcast services?

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