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12 Cards in this Set
- Front
- Back
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What is a dummy load?
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An impedance-matched device capable of absorbing all of a transmitters power.
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What is the function of a product detector?
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It demodulates ssb, cw, and fsk signals.
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What is the frequency range of the mf band?
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300 kilohertz to 3 megahertz.
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Microwave systems use what portion of the atmosphere?
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Troposphere.
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What is the voice channel capacity of an los communications system?
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Up to 600 4-kilohertz channels.
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What is the one-hop transmission range of a tropospheric-scatter system?
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Up to 800 kilometers (500 statute miles).
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What is the primary advantage of NTDS over conventional systems?
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Speed
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What are the three NTDS data transmission subsystems?
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Links 4A, 11, and 14.
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What are the three main design considerations of portable equipment?
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They must be lightweight, compact, and self-contained.
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Lasers operate in what portion of the frequency spectrum?
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At or near visible light.
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What are the two types of lasers?
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Cw or pulsed
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What are the effects of adverse weather on the laser beam?
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It absorbs it.
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