The facility houses low frequency (LF) and high frequency (HF) transmitter and antenna systems, and certification of the new U.S. Navy Mobile User Objective System (MUOS) ground terminals is in progress as of early 2015.

[1] The joint American, Italian, and NATO facility houses an AN/FRT-95A Low Frequency Radio Transmitting System,[2] hosts a USAF HF SCOPE Command, part of the High Frequency (HF) Global Communications System (HFGCS)[3][4] and a US Navy MUOS Ground Station.

[citation needed] Since 2009 the station has become the target of protests by the people of Niscemi, citing concerns over the expansion of the site, which is located inside the Riserva Naturale Sughereta di Niscemi, a protected Site of Community Importance, and the possible harmful effects of electromagnetic radiation on the local wildlife and inhabitants from the MUOS ground stations.

In the face of the protests, in March 2013 the regional government revoked authorisation for the installation of MUOS,[6][7] and commissioned an independent study by the Italian Istituto Superiore di Sanità ("Higher Health Institute").

The ISS report, issued in July 2013, concluded that there was no evidence that electromagnetic emissions posed a risk, but recommended further monitoring,[8] and authorisation was re-granted.