Glossary:

ATIS Telecom Glossary

Search Keyword By: R

Select a term name to open its entry and any media references. Longer definitions end with a “Read More” link.

radio horizon

The locus of points at which direct rays from an antenna are tangential to the surface of the Earth.
Note: If the Earth were a perfect sphere and there were no atmospheric anomalies, the radio horizon would be a circle. In practice, the distance to the radio horizon is affected by the height of the transmitting antenna, the height of… (Read More →)

radio horizon range (RHR)

1. The distance at which a direct radio wave can reach a receiving antenna of given height from a transmitting antenna of given height.
Note: The radio horizon range in nautical miles, R, is given by the relation R =
1. 23(ht1/2 + hr1/2), where ht and hr are the heights of the transmitting and receiving antennas in feet. The… (Read More →)

radio interface

The common boundary between a mobile station and the radio equipment in the network, which is the boundary defined by functional characteristics, physical interconnection characteristics, signal characteristics, and other characteristics as appropriate.

radio net

1. An organization of radio stations that is capable of direct communication on a common frequency.
2. An organization of radio stations that broadcast common programming, not necessarily simultaneously, at different frequencies from different locations.

radio paging

The use of a pocket-size radio receiver capable of alerting its wearer that there is a phone call, either from a displayed phone number or to a predesignated number.
Note: Radio paging may be considered a subset of paging. Synonym beeping.

radio personal terminal (RPT)

A light-weight, pocket-size portable radio terminal (or "personal terminal") providing the capability for the user to be either stationary or in motion while accessing and using telecommunication services. [T1.244-1995] Synonym [loosely] brick.

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