Q. Which of the following is not a reason for redistributing TV signals through satellites rather than skywaves or spacewaves?

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Q. What is the primary use of communication satellites?

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Q. When individual up converters are used to modulate a channel, what is used to combine them into final signal?

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Q. In RF tuning, _________ provides the final up conversion to the microwave frequency?

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Q. In digital systems, analog signals are first digitized with PCM converters before modulation.

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Q. Which part of the transmitter subsystem modulates the baseband signal?

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Q. Which of the following amplifiers is used in the transmitter substation?

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Q. If the earth station downlink signal received is at fₛ = 4.08 GHz, what first stage local-oscillator frequency fₗₒ is needed to achieve IF of 770 MHz?

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Q. In Rf tuning, what is the first local oscillator?

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Q. The satellite in the earth station must be steerable even for a geosynchronous satellite.

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Q. What is the use of the band pass filter in the receiver section?

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Q. Telemetry, command, and control (TC and C) subsystem allow a ground station to monitor and control conditions in the satellite.

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Q. Which of the following is not true?

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Q. Why is it not possible to provide transmit function by wideband amplifier and mixer circuits?

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Q. What is the number of transponders if the satellite uses 12 channels of frequency and frequency reuse is implemented?

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Q. In a regenerative transponder, the signal is demodulated and modulated again before transmission.

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Q. Which of the following transponders convert the uplink signal to downlink signal using two mixers

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Q. Why is there a huge spectrum space between the transmitted and received signal in satellite communication?

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Q. Which of the following components receives, translates the signal frequency and re-transmits the signal in a satellite?

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Q. Which of the following are common baseband signals transmitted from the earth ground station?

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