Definition
An aircraft radio used to transmit and receive voice messages between the pilot and air traffic control, flight service stations, or other aircraft. It operates in the very high frequency (VHF) aviation band, typically 118.000 to 136.975 MHz, and is separate from radios used for navigation.
Plain English
The radio in the cockpit that lets the pilot talk to controllers and other pilots. It is used for talking, not for navigating.
Context Anchor
Seen in cockpit equipment descriptions, instrument panel discussions, and procedures that require talking with air traffic control or other ground services.
Derivation
“Communication” comes from a Latin word meaning “to share” or “make common.” “Radio” refers to sending signals through the air by radio waves. Together, the term points to equipment used to share voice information without a wire connection.
Why Pilots Care
It enables pilots to receive clearances, traffic advisories, and weather information required for safe flight in controlled airspace.
Intuition Check
Do not confuse the communications radio with a navigation radio or the cockpit intercom. The communications radio is for talking and listening outside the aircraft; the intercom is mainly for people inside the aircraft.
Example Sentence 1
Before taxiing, the pilot tuned the communications radio to the ground control frequency and requested clearance.
Example Sentence 2
Approach control instructed the pilot to contact departure on the second communications radio.