modulator

modulator

A device which modulates a carrier. Modulators are found as components in broadcasting transmitters and in satellite transponders. Modulators are also used by CATV companies to place a baseband video television signal onto a desired VHF or UHF channel. Home video tape recorders also have built-in modulators which enable the recorded video information to be played back using a television receiver tuned to VHF channel 3 or 4.

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Vārdšķira: noun
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Nozare/domēns: Aerospace
Category: Satellites
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modul

Education; Teaching

A separate unit or selection of material that forms a coherent whole, but may be combined with other units.

modul elastičnosti

Physics; General physics

The ratio of stress to the strain produced in a body.

modul tvrdoće

Physics; General physics

The ratio of tangential stress to the shear strain produced in a body.

Jangov modul elastičnosti

Physics; General physics

The ratio of normal stress to the longitudinal strain produced in a body.

parabolična antena

Aerospace; Satellites

The most frequently found satellite TV antenna, it takes its name from the shape of the dish described mathematically as a parabola. The function of the parabolic shape is to ...

orbitalni period

Aerospace; Satellites

The time that it takes a satellite to complete one circumnavigation of its orbit.

šum

Aerospace; Satellites

Any unwanted and unmodulated energy that is always present to some extent within any signal.

herc (Hz)

Aerospace; Satellites

The name given to the basic measure of radio frequency characteristics. An electromagnetic wave completes a full oscillation from its positive to its negative pole and back again ...

interferencija

Aerospace; Satellites

Energy which tends to interfere with the reception of the desired signals, such as fading from airline flights, RF interference from adjacent channels, or ghosting from reflecting ...

inklinacija

Aerospace; Satellites

The angle between the orbital plane of a satellite and the equatorial plane of the earth.

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Elizabet Tejlor

A three-time Academy Awards winner, Elizabeth Taylor is an English-American film legend. Beginning as a child star, she is known for her acting talent ...