| Acronym | Definition |
|---|
| VOR➣VHF (Very High Frequency) Omni-directional Radio-range |
| VOR➣Volvo Ocean Race |
| VOR➣Voice of Reason |
| VOR➣Verkehrsverbund Ost Region (German: Eastern Region Transport Association; Austria) |
| VOR➣Value of Reserves |
| VOR➣Vestibulo-Ocular Reflex (ophthalmology) |
| VOR➣Vendor of Record (Canada) |
| VOR➣Voice Operated Recording |
| VOR➣Visions of Reality |
| VOR➣VHF Omnidirectional Range |
| VOR➣Vestibular Ocular Reflex |
| VOR➣Variation Order Request |
| VOR➣Verification of Rent (rent-payment history verification) |
| VOR➣Vehicle Off Road (urgent repair status) |
| VOR➣Vehicle Occupancy Rate |
| VOR➣Voice Operated Recorder |
| VOR➣Voice-Operated Relay |
| VOR➣Voice of the Retarded, Inc. |
| VOR➣Visual Operating Restriction |
or the code may be removed. In the system, the ground station transmits two signals simultaneously but with a phase difference, as with a bearing of the beacon from the aircraft. There is no phase difference when the aircraft is directly north of the transmitting station; the signals are 90° out of phase when the aircraft is due east of the transmitting station and 180° and 270° when the aircraft is directly south and west, respectively, of the transmitting station. Stations are aligned with magnetic north, except when located in high latitudes, where they are aligned with true north. The system is used for both en route navigation and as a terminal approach aid. On aeronautical charts, the availability of VORs and terminal VORs is indicated as shown in the illustration.