Castledown FM is run by a team of around 30 volunteers from the local community; a mix of presenters, producers, engineers, and coordinator's, without whom the station would not be able to run. 

Initially launched as Castledown Radio in 2005, the station was part of the Integration of Communities Project, funded by the EU and DEFRA.

Following a successful period of online broadcasting FM transmissions began on 104.7 in November 2006.  In 2021 a second transmitter was added broadcasting on 107.6 enhancing and expanding our coverage in Tidworth and surrounding villages to the south.