The radio and its frequencies

How the aircraft radio works: each station on its own frequency in the airband from 118 to 137 MHz, press to talk, and one voice at a time. You learn why you listen first, and which frequency is for emergencies everywhere.

What you learn

• Explain what a frequency is
• Explain why only one voice can talk at a time
• Explain why you listen before you talk
• Name the emergency frequency, 121.500
• Say where the aviation VHF band sits on the dial

In playlists

• Start here
• Radio calls and phraseology

Also on

• Video course: Aviation for beginners
• Glossary: PTT
• Wiki: PTT (Push-to-Talk)