Definition
A radio frequency designated for voice communication, typically within the band of audible speech roughly 300 to 3,000 Hz, used to carry spoken transmissions between pilots and ground stations or other aircraft.
Plain English
A radio channel set aside for talking, as opposed to one used for navigation signals or data.
Context Anchor
Seen in aviation abbreviations, notices, radio communication information, and places where a pilot is told which channel to use for voice contact.
Derivation
From Latin vox (voice) and frequentia (a crowding together, later used for the rate of repetition of a wave). Together it simply means the rate of waves used to carry the human voice.
Why Pilots Care
Some navigation aids broadcast only navigation signals, while others also carry voice. Knowing a frequency is a voice frequency tells the pilot they can listen for spoken information such as weather or advisories on it.
Intuition Check
Frequency does not mean how often something happens here. It means the specific radio channel you tune for voice communication.
Example Sentence 1
The VOR's voice frequency was used to broadcast the latest weather advisory.
Example Sentence 2
Ground stations receive voice frequency signals from multiple aircraft at once.