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Correlations 2 : Communications 2nd Sem 2526
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Frequencies in the UHF range are normally propagated by means of
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Top loading is sometimes used with an antenna in order to increase its
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Distances near the skip distance should be used for sky wave propagation
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It is defined as the highest frequency that can be propagated upward and still return to earth by the ionosphere
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An antenna with a radiation resistance of 50 ohms and a loss resistance of 3 ohms receives 150 watts of power from a transmitter. How much power is radiated into space?
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A group of antenna elements arranged to provide the desired directional characteristics is called
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Ground wave communication system is most effective in what frequency range?
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ECE Board Exam April 2001 In order to fully utilize the _______, a quarter wave vertical antenna should require an excellent ground system.
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Determine the approximate length of a simple whip quarter wave antenna at UHF frequency of 450.25 MHz
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Different grouping of the electromagnetic spectrum.
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