915The band 119.98 to 120.02 GHz is also allocated to the amateur service on a secondary basis.

915 The band 119.98 to 120.02 GHz is also allocated to the amateur service on a secondary basis.

916 The band 122 to 123 GHz (centre frequency 122.5 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.

917 In the band 140.69 to 140.98 GHz all emissions from airborne stations, and from space stations in the space-to-Earth direction, are prohibited. 918 The bands 140.69 to 140.98 GHz, 144.68 to 144.98 GHz, 145.45 to 145.75 GHz and 146.82 to 147.12 GHz are also allocated to the radio astronomy service on a primary basis for spectral line observations. In making assignments to stations of other services to which the bands are allocated, administrations are urged to take all practicable steps to protect the radio astronomy service 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).

919 The band 150 to 151 GHz, 174.42 to 175.02 GHz, 177 to 177.4 GHz, 178.2 to 178.6 GHz, 181 to 181.46 GHz and 186.2 to 186.6 GHz are also allocated to the radio astronomy service on a secondary basis for spectral line observations. In making assignments to stations of other services to which these bands are allocated, administrations are urged to take all practicable steps to protect the radio astronomy service 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).

920 Additional allocation: in the United Kingdom, the band 182 to 185 GHz is also allocated to the fixed and mobile services on a primary basis.