ECE :: Radio Receivers
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A transmitter serial current contains
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In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 25 MHz will be
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In a communication system, noise is most likely to affect the signal
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The noise produced by a resistor is proportional to
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In a radio receiver, if the intermediate frequency is too high
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In a superheterodyne receiver, the IF is 455 kHz. If it is tuned to 1200 kHz, the image frequency will be
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The selectivity of most receivers is determined largely by
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In a superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is
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In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The rejection ratio at 25 MHz will be
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As compared to tuned radio frequency receivers which of the following is the advantage of using superheterodyne receivers?
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