et

SELCAL

1 abbreviation

Terminological databases

Lennunduse terminibaas

ID 735508 Last modified 03.05.2024
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Domain air trafficair traffic control
selektiivkutsungi süsteem
valikulise väljakutse süsteem
selective calling system
Selective Calling System
SELCAL system
système d’appel sélectif
système SELCAL
  • a system which permits the selective calling of individual aircraft over radiotelephone channels linking a ground station with the aircraft
  • an automatic signaling system used in aircraft to notify the pilot that the aircraft is receiving a call
    Good to know
    • Each aircraft operated by an airline is assigned a particular four-tone combination for identification purposes. A ground station keys the signal when trying to contact a particular aircraft. The signal is decoded by the airborne selcal system and the crew is alerted. The system can operate on VHF (very high frequency) as well as HF (high frequency) frequencies. A total of 10,920 codes can be generated by the system.
Good to know
  • Valdkond ICAO lisade põhjal loodud klassifikaatori järgi: Lennuliikluse korraldamine
selektiivkutsungi süsteem
valikulise väljakutse süsteem
SELCAL abbreviation
selective calling system
Usage examples
  • With the selective calling system known as SELCAL, the voice calling is replaced by the transmission of coded tones to the aircraft over the radiotelephony channels. A single selective call consists of a combination of four pre-selected audio tones whose transmission requires approximately 2 seconds.
Selective Calling System
SELCAL system abbreviation
Usage examples
  • The purpose of the SELCAL system is to permit the selective calling of individual aircraft over radiotelephone channels linking the ground station with the aircraft, and is intended to operate on en-route frequencies with existing HF and VHF ground-to-air communications transmitters and receivers with a minimum of electrical and mechanical modification.
SELCAL abbreviation
système d’appel sélectif
système SELCAL
SELCAL abbreviation

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