16Background

16 Background

(1) Radiocommunications receivers operate in the frequency band 2700 MHz to 2900 MHz for the following: (a) ARS; (b) RLS. (2) The receivers operated for ARS are used for air traffic control, and interference has a potential impact on air safety. Many of these receivers are located at major airports. These receivers are often part of radar systems. (3) The receivers operated for RLS are used for meteorological purposes, such as weather radar. These receivers are often part of radar systems. (4) The spectrum plan allocates the frequency band 2700 MHz to 2900 MHz for RLS as a secondary service; however, international footnote reference 423 recognises that ground base radars used for meteorological purposes operate on a basis of equality with ARS.

Note: For primary services and secondary services, see sections 5, 7 and 12 of the spectrum plan.

(5) Radiocommunications receivers are also used by the Department of Defence for radiodetermination in the frequency band 2700 MHz to 2900 MHz.