Communications

Selective Calling System(SELCAL)

Definition

A system that alerts a specific aircraft crew when ATC needs to communicate over HF radio on oceanic routes. Allows crews to turn down background noise while monitoring for their unique SELCAL code.

Related Terms

High Frequency Radio(HF)

A long-range radio communication system using frequencies between 2 and 30 MHz f...

Controller-Pilot Data Link Communications(CPDLC)

A text-based communication system between ATC and pilots using data link instead...

Test your knowledge

Think you understand Selective Calling System? Challenge yourself with practice questions covering communications and all other ATPL subjects.

Start a Practice Quiz

Or browse all questions by subject