Definition
The band of radio frequencies from 30 to 300 megahertz (MHz). In aviation, VHF carries most air-to-ground voice communications (118.000–136.975 MHz) and the VOR navigation signals (108.000–117.975 MHz). VHF signals travel in straight lines (line-of-sight), so range depends on altitude and terrain rather than following the curve of the earth.
Plain English
A range of radio frequencies used for most pilot–controller talking and for VOR navigation. Because the signals travel in straight lines, you need to be high enough that nothing solid is blocking the path between you and the station.
Context Anchor
Seen when tuning aircraft communication radios, using certain navigation radios, or reading about radio navigation and instrument procedures.
Derivation
‘Very-high frequency’ is a label set by the International Telecommunication Union for the 30–300 MHz band. ‘High’ here is relative — it sits above HF (high frequency) and below UHF (ultra-high frequency). The name is just a position on the radio spectrum, not a description of how high the number is in everyday terms.
Why Pilots Care
VHF is the primary medium for real-time voice contact with air traffic control and for receiving VOR navigation signals, directly affecting situational awareness and separation.
Intuition Check
VHF does not mean a louder, stronger, or higher-quality radio signal. It means a specific range of radio frequencies used by aviation equipment.
Example Sentence 1
After takeoff, the pilot tuned the VHF radio to the departure frequency and checked in with the controller.
Example Sentence 2
VOR navigation operates on VHF frequencies between 108 and 118 MHz.