EXAMIANS
Coupling into and out of a traveling-wave tube can be accompanied by a
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A high-power microwave pulse of the order of megawatts can be generated by a
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The maximum usable range of the usual radar set (on any particular range setting) is determined by
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Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance.
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If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the
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In an SHF pulsed radar set, a reflex klystron can be used as a
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Microwave frequencies are normally regarded as those in the range of
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A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor.
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Which of the reception problems below that is not due to multipath?
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A traveling-wave tube (TWT) amplifies by virtue of
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