897Radars located on spacecraft may be operated on a primary basis in the band 35.5 to 35.6 GHz.

897 Radars located on spacecraft may be operated on a primary basis in the band 35.5 to 35.6 GHz.

898 In making assignments to stations of other services, administrations are urged to take all practicable steps to protect the spectral line observations of the radio astronomy service in the band 36.43 to 36.5 GHz 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).

899 Subject to agreement obtained under the procedure set forth in Article 14, the band 37 to 39 GHz may also be used in Japan for Earth-to-space transmissions in the fixed-satellite service up to 31 December 1990.

900 In making assignments to stations of other services to which the band 42.5 to 43.5 GHz is allocated, administrations are urged to take all practicable steps to protect the radio astronomy service from harmful interference, especially in the bands 42.77 to 42.87 GHz, 43.07 to 43.17 GHz, and 43.37 to 43.47 GHz, which are used for spectral line observations of silicon monoxide. 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).

901 The allocation of the spectrum for the fixed-satellite service in the bands 42.5 to 43.5 GHz and 47.2 to 50.2 GHz for Earth-to-space transmission is greater than that in the band 37.5 to 39.5 GHz for space-to-Earth transmission in order to accommodate feeder links to broadcasting satellites. Administrations are urged to take all practicable steps to reserve the band 47.2 to 49.2 GHz for feeder links for the broadcasting-satellite service operating in the band 40.5 to 42.5 GHz.

902 In the bands 43.5 to 47 GHz, 66 to 71 GHz, 95 to 100 GHz, 134 to 142 GHz, 190 to 200 GHz and 252 to 265 GHz, stations in the land mobile service may be operated subject to not causing harmful interference to the space radiocommunication services to which these bands are allocated (see No. 435).

903 In the bands 43.5 to 47 GHz, 66 to 71 GHz, 95 to 100 GHz, 134 to 142 GHz, 190 to 200 GHz and 252 to 265 GHz, satellite links connecting land stations at specified fixed points are also authorised when used in conjunction with the mobile-satellite service or the radionavigation-satellite service.

904 The bands 48.94 to 49.04 GHz, and 97.88 to 98.08 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 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).