We supply and commission DVOR systems on a full turnkey basis to airports across the globe, along with full remote control and monitoring.

What are DVORs?

A DVOR (Doppler VHF Omni Directional Range) is a short/medium-range radio navigation system used to aid aircraft in determining their flight position and direction in relation to their destination using VHF (Very High Frequency) signals between 108.00 to 117.95 MHz sent from a radio beacon.

DVOR systems at Systems Interface

We can supply DVOR systems and install on a full turnkey basis, or we can provide engineering expertise to support any stage of the project from site survey and safety case development to commissioning and maintenance support.

Our most recent Installation was to replace the En-Route DVOR and DME for Ports of Jersey Jersey Airport, Channel Islands, complete with full remote control and monitoring along with a new equipment shelter.

International DVOR System Projects 

Two other recent installation projects were at  Hambantota International Airport, Sri Lanka and Kopitnari International Airport, Georgia. Both systems were Indra VRB-53B DVOR's and the projects included our undertaking of all site surveys, civil works, counterpoise construction, installation  and commissioning.

We have undertaken similar projects in other parts of the world including Europe and Africa.

How Do They Work? 

DVOR are an International Civil Aviation Organisation (ICAO) standard navigational aid that assists aircraft in their approach by sending omnidirectional signals from ground radio beacons located at airports and runways. These signals are sent from transmitters located in a network of VOR stations.

These stations hold arrays (transmitters) that spin horizontally, sending out very high frequency (VHF) signals ranging from 108.00 to 117.95 MHz. Due to their high frequency, they rely on line of sight from transmitter to receiver.  

When the receiving unit collects these radio signals (up to 200 miles from the transmitter), they can pinpoint their position and enable the aircraft to remain on course. 


Here at Systems Interface, with our team of experienced engineers, we supply and install DVORs to airports across the globe. These Doppler VORs are an advancement of the previous Conventional VOR (CVOR), with enhanced signal accuracy and quality due to their ability to defer the effects of reflections from surrounding hills, mountains, and buildings. 

To find out more about our DVOR equiptment and other projects we have completed please get in touch via our contact us form

ISO Systems Interface is a fully
ISO 9001 : 2015 accredited organisation
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