Telecommunications

Telecommunications

Of or pertaining to the transmission of information over a distance, and the technology used to achieve this communication.

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Telecommunications > General telecom

tropospheric wave

Telecommunications; General telecom

A radio wave that is propagated by reflection from a place of abrupt change in the dielectric constant, or its gradient, in the troposphere. Note: In some cases, a ground wave may ...

sky wave

Telecommunications; General telecom

A radio wave that travels upward from the antenna. Note: A sky wave may be reflected to Earth by the ionosphere.

Earth exploration-satellite service

Telecommunications; General telecom

A radiocommunication service between Earth stations and one or more space stations, which may include links between space stations, in which: information relating to the ...

fixed-satellite service

Telecommunications; General telecom

A radiocommunication service between Earth stations at given positions when one or more satellites are used; the given position may be a specified fixed point or any fixed point ...

mobile service

Telecommunications; General telecom

A radiocommunication service between mobile and land stations, or between mobile stations.

aeronautical fixed service

Telecommunications; General telecom

A radiocommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air ...