Definition
A two-way voice communication capability using radio equipment that transmits and receives in the Very High Frequency band (30–300 MHz), which is the standard band used for civil aviation air-to-ground voice communications between aircraft and air traffic control.
Plain English
The aircraft has a working VHF radio that the pilot can use to talk to controllers and other pilots by voice.
Context Anchor
Seen in flight plan equipment codes, where it tells the flight planning system and air traffic control what communication equipment the aircraft has.
Derivation
Radiotelephony combines 'radio' with 'telephony' (Greek 'tele' meaning 'far' and 'phone' meaning 'voice/sound'). It literally means voice communication at a distance over radio. 'Very High Frequency' describes the radio band used. Together: voice communication over the VHF band.
Why Pilots Care
Confirms reliable voice contact with ATC on standard departure and en route frequencies without needing alternate systems.
Intuition Check
VHF RTF does not mean any radio equipment on the aircraft. It specifically means voice radio communication capability on VHF aviation frequencies.
Example Sentence 1
The pilot filed 'V' in the equipment box of the flight plan to indicate the aircraft has VHF RTF for normal ATC communications.
Example Sentence 2
Before departure the pilot confirmed the VHF RTF radios were tuned and tested on the assigned clearance frequency.