Satellites

Satellites

Of or relating to any man-made object launched to orbit Earth or another celestial body.

Contributors in Satellites

Satellites

Line-of sight, point-to-point transmission of signals at high frequency. Many CATV systems receive some television signals from a distant antenna location with the antenna and the system connected by ...

Low noise amplifier (LNA)

Aerospace; Satellites

This is the preamplifier between the antenna and the earth station receiver. For maximum effectiveness, it must be located as near the antenna as possible, and is usually attached directly to the ...

Low noise block downconverter (LNB)

Aerospace; Satellites

A combination Low Noise Amplifier and downconverter built into one device attached to the feed.

Jammer

Aerospace; Satellites

An active electronic counter-measures (ECM) device designed to deny intelligence to unfriendly detectors or to disrupt communications.

Hertz (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 in what is known as ...

Hub

Aerospace; Satellites

The master station through which all communications to, from and between micro terminals must flow. in the future satellites with on-board processing will allow hubs to be eliminated as MESH networks ...

Gigahertz (GHz)

Aerospace; Satellites

One billion cycles per second. Signals operating above 3 Gigahertz are known as microwaves. above 30 GHz they are know as millimetre waves. As one moves above the millimetre waves signals begin to ...