905In the band 48.94 to 49.04 GHz, all emissions from airborne stations are prohibited.

905 In the band 48.94 to 49.04 GHz, all emissions from airborne stations are prohibited.

906 In the bands 51.4 to 54.25 GHz, 58.2 to 59 GHz, 64 to 65 GHz and 72.77 to 72.91 GHz, radio astronomy observations may be carried out under national arrangements. Administrations are urged to take all practicable steps to protect radio astronomy observations in these bands from harmful interference.

907 In the bands 51.4 to 54.25 GHz, 58.2 to 59 GHz, 64 to 65 GHz, 86 to 92 GHz, 105 to 116 GHz and 217 to 231 GHz, all emissions are prohibited. 908 Additional allocation: in the Federal Republic of Germany, Japan and the United Kingdom, the band 54.25 to 58.2 GHz is also allocated to the radiolocation service on a primary basis.

909 In the bands 54.25 to 58.2 GHz, 59 to 64 GHz, 116 to 134 GHz, 170 to 182 GHz and 185 to 190 GHz, stations in the aeronautical mobile service may be operated subject to not causing harmful interference to the inter-satellite service (see No. 435).

910 In the bands 59 to 64 GHz and 126 to 134 GHz, airborne radars in the radiolocation service may be operated subject to not causing harmful interference to the inter-satellite service (see No. 435).

911 The band 61 to 61.5 GHz (centre frequency 61.25 GHz) is designated for industrial, scientific and medical (ISM) applications. The use of this frequency band for ISM applications shall be subject to special authorisation by the administration concerned in agreement with other administrations whose radiocommunication services might be affected. In applying this provision administrations shall have due regard to the latest relevant CCIR Recommendations.

912 In the band 78 to 79 GHz radars located on space stations may be operated on a primary basis in the earth exploration-satellite service and in the space research service.

913 In the band 84 to 86 GHz, stations in the fixed, mobile and broadcasting services shall not cause harmful interference to broadcasting-satellite stations operating in accordance with the decisions of the appropriate frequency assignment planning conference for the broadcasting-satellite service.

914 The band 93.07 to 93.27 GHz is also used by the radio astronomy service for spectral line observations. In making assignments to stations of the services to which this band is allocated, administrations are urged to take all practicable steps to protect radio astronomy observations from harmful interference. Emissions from space or airborne stations can be particularly serious sources of interference to the radio astronomy service (see Nos. 343 and 344 and Article 36).