- selective calling system
- возд. система избирательного вызова (на связь)
Большой англо-русский и русско-английский словарь. 2001.
selective calling system
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selective calling system — An automatic signaling system used in aircraft to notify the pilot that the aircraft is receiving a call. Each aircraft operated by an airline is assigned a particular four tone combination for identification purposes. A ground station keys the… … Aviation dictionary
Selective calling — SECAL redirects here. For the French wine grape also known as Secal, see Jurançon (grape). In a conventional, analog two way radio system, a standard radio has noise squelch or carrier squelch which allows a radio to receive all transmissions.… … Wikipedia
Digital Selective Calling — (DSC; Digitaler Selektivruf) ist ein Anrufverfahren im Seefunk, das alternativ zum Sprechfunk Anruf benutzt wird. Ein Anruf dient dem Herstellen einer Funkverbindung mit einer bestimmten Funkstelle, allen erreichbaren Funkstellen (all… … Deutsch Wikipedia
Digital Selective Calling — A stationary VHF DSC unit Digital Selective Calling or DSC is a standard for sending pre defined digital messages via the medium frequency (MF), high frequency (HF) and very high frequency (VHF) maritime radio systems. It is a core part of the… … Wikipedia
Global Maritime Distress Safety System — The Global Maritime Distress and Safety System (GMDSS) is an internationally agreed upon set of safety procedures, types of equipment, and communication protocols used to increase safety and make it easier to rescue distressed ships, boats and… … Wikipedia
Automatic Identification System — The Automatic Identification System (AIS) is a system used by ships and Vessel Traffic Services (VTS) principally for identification and locating vessels. AIS provides a means for ships to electronically exchange ship data including:… … Wikipedia
Continuous Tone-Coded Squelch System — In telecommunications, Continuous Tone Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two way radio communications channel. It is sometimes called tone squelch. Where more… … Wikipedia
Tripartite System — The Tripartite System, known colloquially as the grammar school system, was the structure by which secondary education was organised in England and Wales between the 1944 Butler Education Act and the Education Act 1976, and in Northern Ireland… … Wikipedia
political system — Introduction the set of formal legal institutions that constitute a “government” or a “ state.” This is the definition adopted by many studies of the legal or constitutional arrangements of advanced political orders. More broadly defined,… … Universalium
Criminal justice system of Japan — Three basic features of Japan s system of criminal justice characterize its operations. First, the institutions police, government prosecutor s offices, courts, and correctional organs maintain close and cooperative relations with each other,… … Wikipedia
Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… … Wikipedia
