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Related Flashcards
Cards In This Set
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Equipment used for generating, amplifying, and transmitting RF carrier is collectively called
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Transmitter
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What basic receiver function involves having the transmitted electromagnetic wave pass through the receive antenna in such a manner as to induce a voltage in the antenna?
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Reception
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The ability to reproduce the input signal accurately is the characteristics of the receiver's
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Fidelity
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A combination of a transmitter and receiver that is built as a single unit and sharing common tuned circuits is called a
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Transceiver
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Which of the following cannot be performed by the transceiver's computerized components and mirco-circuitry?
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Repair itself.
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A transmission line that consists of a center conductor placed inside a metal tube functioning as the outer tube is called a
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Rigid coaxial cable
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Which selection best describes the term "cutoff frequency" when discussing transmission line properties?
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The frequency where Xc causes the signal to be shunted.
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Using figure 1-10, determine the wavelength if the frequency is changed from 150 MHz to 250 MHz
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1.2 meters
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Using figure 1-10, determine the electrical length if the frequency is changed from 150 MHz to 250 MHz.
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8.33 wavelenghs
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A non resonant transmission line is a line
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Having no reflected waves
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If a transmission line is terminated in a short,
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A current is at maximum and voltage at minimum at the termination.
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In a basic communication system, what converts radio frequency (RF) energy's current oscillation into electric and magnetic fields of force?
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Antenna
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The concept that alternating current (AC) changes in magnitude and reverses its direction during each cycle is
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What makes radio transmission possible
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If the electric field component travels in a plane perpendicular to the Earth's surface, the radio wave is
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Vertically polarized
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What types of polarization do satellite terminals transmit and receive?
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Transmit right hand and receive left hand circular polarizations.
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