The Oxford transmitting station (sometimes known as the Beckley transmitter) is a broadcasting and telecommunications facility, situated on land 129.5 metres (425 ft) above Ordnance Datum (mean sea level) to the north east of the city of Oxford, in Oxfordshire, England (grid reference SP567105). It has a guyed steel lattice mast which is 154.4 metres (507 ft) in height to the top of the main steel structure. Mounted above that are the UHF television antennas, contained within a GRP shroud. These antennas have an average height above Ordnance Datum of 289 metres (948 ft)., or 159.5 metres (523 ft) above ground level. The total height of the structure is 165.7 metres (544 ft).