Q. What is the altitude of HALE?

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Q. What type of communication does the MQ-9 ‘reaper’ UCAV use?

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Q. In a radio controlled UAV, FHSS technology has more advantage than DSSS technology.

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Q. Who discovered the radio waves?

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Q. What is the component that converts an electrical signal into a signal suitable for transmission in a given medium called?

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Q. What type of communication is used for underwater communication?

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Q. Earth be considered as a communication medium.

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Q. A device that can both transmit and receive is called as?

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Q. Radio transmission is always the speed of light irrespective of the medium.

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Q. What are the factors that affect signal propagation speed assuming no noise?

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Q. Which of the following is not an example of simplex communication?

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Q. What type of communication is used in a commercial walkie talkie?

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Q. What type of communication is used between ATC and aircraft?

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Q. In what type of communication is time division multiplexing possible?

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Q. The process of making the signal more compatible with the medium is called as?

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Q. The information signal is otherwise referred to as ___________

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Q. Voice signals cannot be directly transmitted by radio.

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Q. In frequency modulation, carrier frequency is always greater than baseband frequency.

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Q. Which one of the following is not a type of modulation?

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Q. In amplitude modulation, which of the following varies?

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