Satellite Glossary
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Hertz to Microinterference
Hertz (Hz) - The basic measure of radio frequency characteristics. An electromagnetic wave completes a full oscillation from its positive to its negative pole and back again in what is known as a cycle. A Hertz is equal to one cycle per second.
Hub - The master station through which all communications to, from and between micro terminals must flow.
Inclination - The angle between the orbital plane of a satellite and the equatorial plane of the earth.
INTELSAT - Abbreviation for the International Telecommunications Satellite Organization, which operates a network of satellites for international transmissions.
Interference - 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 objects such as mountains and buildings.
ITU - Abbreviation for the International Telecommunication Union, which develops international technical standards for communications equipment including satellites.
Jammer - A device designed to disrupt or block communications signals.
Ka Band - The frequency range from 18 to 31 GHz.
Kbps - Kilobits per second. Refers to transmission speed of 1,000 bits per second.
Kilohertz (kHz) - One thousand (1,000) cycles per second.
Master Antenna Television (MATV) - An antenna system that serves a concentration of television sets such as in apartment buildings, hotels or motels.
Megahertz (MHz) - One million cycles per second.
Microwave Interference - Interference which occurs when an earth station aimed at a distant satellite picks up a second, often stronger signal, from a local telephone terrestrial microwave relay transmitter. Microwave interference can also be produced by nearby radar transmitters as well as the sun itself. Relocating the satellite dish by only several feet will often completely eliminate the microwave interference.
See Modulation to Satellite
