Morgan's Hill (grid reference SU028672) is a 12.6-hectare (31-acre) biological Site of Special Scientific Interest between Calne and Devizes in Wiltshire, England.

The station opened in 1920 with the callsign 'GKT' and was equipped with a six-kilowatt valve transmitter and a receiver, guaranteeing a two-way range of 1,500 miles (2,400 km).

Radiotelegrams were received and forwarded to London for the price of 11d per word; the service proved successful and in 1924 a second mast with callsign 'GKU' was added.

In 1981 Wiltshire Constabulary erected two 46-metre (150') masts and an unmanned equipment building for police radio communication at the peak of the hill, a small distance from previous stations.

[11] In 1990 the Ministry of Defence were granted planning permission for the siting of a mobile prefabricated building, fuel storage, 3 satellite dishes and a developed path from the main road.

Signage on the masts and building suggest involvement from three mobile networks – Vodafone, Orange and O2 – as well as Airwave Communications Ltd who administer radio and data technology for all emergency services.