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8 Cards in this Set
- Front
- Back
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What is ducting?
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An atmospheric duct is a horizontal layer in the lower atmosphere that aides in the guiding of radio signals.
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What is a wavelength?
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The distance between wave peaks.
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What is frequency?
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The number of waves that pass a fixed point in a given amount of time.
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What is refraction?
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The deviation of light or EM wave as it passes though the atmosphere.
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What is multiplexing?
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Two or more signals over a common carrier wave.
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What is modulation?
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The process of varying one or more properties of high frequency periodic waveform.
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What is FSK?
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Frequency Shift Keying is a frequency modulation scheme.
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What is PSK?
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Phase Shift Keying is a digital modulation scheme.
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