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Long range radio transmission is possibl...

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

A

1-3 MHz

B

150-500 kHz

C

8-25 MHz

D

80-150 MHz

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-COMMUNICATION SYSTEMS -Exercise - IA (Space Communication)
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  6. The sky wave propagation is suitable for radio waves of frequency

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  7. The Indian remote sensing satellite is

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  8. A geosynhronous satellite is

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  9. A signal emitted by an antenna from a certain point can be received at...

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  10. The electromagnetic waves of frequency 80 MHz and 200 MHz

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  11. Which of the following is better propagation mode to propagate televis...

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  12. Radio waves of constant amplitude can be generated with

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  13. Long range radio transmission is possible when the radiowaves are refl...

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  14. Among the following, the waves which can penetrate the ionosphere are

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  15. Which of the following modulated signal has the best noise-tolerance ?

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  17. The space waves which are affected seriously by stmospheric conditions...

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  18. When a low flying aeroplane passes over head, we sometimes notice a sl...

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  19. In satellite communication 1. The frequency used lies between 5 MHz ...

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  20. Which of the following device is full duplex ?

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