SELCAL (English, noun)
expansion: SELCAL (countable and uncountable, plural SELCALs)
Senses:
topics: aeronautics
aerospace
aviation
business
engineering
natural-sciences
physical-sciences
glosses: A system for alerting a specific aircraft that a radio station on the ground wishes to communicate with them, via transmitting an aircraft-specific sequence of audio tones over the aircraft's company radio frequency to an automatic decoder on board the aircraft.
tags: countable
uncountable
topics: aeronautics
aerospace
aviation
business
engineering
natural-sciences
physical-sciences
glosses: An alert sent via this system.
tags: countable
Forms:
form: SELCALs
tags: plural
form: SelCal
tags: alternative