Satellite Glossary
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Antenna
A device for transmitting and/or receiving radio waves. Usually a parabolic- shaped dish.
Analog
Continuous variations in frequency/amplitude. The signals vary continuously instead of in discrete steps (digital). Most current audio/visual machines are analog. Spelt "analogue" in the UK.
Aperture
A cross sectional area of the antenna which is exposed to the satellite signal.
Attenuation
Power loss of electromagnetic signals between transmission and reception points.
Azimuth
The horizontal angle from true north (0 degrees) to a Thaicom satellite in a clockwise direction.
