8Background

8 Background

(1) Fixed receivers operate under spectrum licences other than 2.5 GHz band spectrum licences. These include: (a) receivers operating in the 2.3 GHz band, used at the time this instrument was made for TDD fixed and mobile broadband services; (b) those operating in the 2.5 GHz mid-band gap, used at the time this instrument was made for ENG. ENG involves the use of a variety of link types, including low height short range wireless camera to news vehicle links, higher power directional links from nomadic news van stations to fixed radiocommunications receiver sites called collection stations and helicopter relay links.

Note: For more information see ITU‑R Recommendation F.1777 “System characteristics of television outside broadcast, electronic news gathering and electronic field production in the fixed service for use in sharing studies”. ITU-R Recommendation F.1777 is available, free of charge, from the website of the International Telecommunication Union at www.itu.int.

(2) Typically, the ACMA has not published documents setting out coordination requirements between radiocommunications devices operated under spectrum licences. It is necessary to look at the relevant spectrum licence technical framework for each band to determine system characteristics and coordination requirements.