887All emissions in the band 31.3 to 31.5 GHz are prohibited.

887 All emissions in the band 31.3 to 31.5 GHz are prohibited.

888 In Regions 1 and 3, in making assignments to stations of other services to which the band 31.5 to 31.8 GHz is 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). In Region 2, all emissions in the band 31.5 to 31.8 GHz are prohibited.

889 Different category of service: in Bulgaria, Egypt, Hungary, Mongolia, Poland, the German Democratic Republic, Romania, Czechoslovakia and the U.S.S.R., the allocation of the band 31.5 to 31.8 GHz to the fixed and mobile, except aeronautical mobile, services is on a primary basis (see No. 425).

890 Different category of service: in Australia, Spain and the United States, the allocation of the band 31.8 to 32.3 GHz to the space research service (deep space) in the space-to-Earth direction is on a primary basis (see No. 425). This use shall not impose power flux-density constraints on the inter-satellite service in the band 32 to 32.3 GHz.

891 Different category of service: in Bulgaria, Cuba, Hungary, Mongolia, Poland, the German Democratic Republic, Czechoslovakia and the U.S.S.R., the allocation of the band 31.8 to 32.3 GHz to the space research service is on a primary basis (see No. 425).

892 Subject to agreement obtained under the procedure set forth in Article 14, the band 31.8 to 33.8 GHz may also be used in Japan for space-to-Earth transmissions in the fixed-satellite service up to 31 December 1990.

893 In designing systems for the inter-satellite and radionavigation services in the band 32 to 33 GHz, administrations shall take all necessary measures to prevent harmful interference between these two services, bearing in mind the safety aspects of the radionavigation service (see Recommendation 707).

894 Additional allocation: in Afghanistan, Saudi Arabia, Bahrain, Bangladesh, Egypt, the United Arab Emirates, Spain, Finland, Gabon, Guinea, Indonesia, Iran, Iraq, Israel, Kenya, Kuwait, Lebanon, Libya, Malaysia, Malawi, Mali, Malta, Morocco, Mauritania, Nepal, Niger, Nigeria, Oman, Pakistan, the Philippines, Qatar, Syria, Senegal, Singapore, Somalia, Sudan, Sri Lanka, Sweden, Tanzania, Thailand, Togo, Tunisia, Yemen A.R. and Zaire, the band 33.4 to 36 GHz is also allocated to the fixed and mobile services on a primary basis.

895 Different category of service: in Australia, Spain and the United States, the allocation of the band 34.2 to 34.7 GHz to the space research (deep space) (Earth-to-space) service is on a primary basis (see No. 425). 896 Different category of service: in Bulgaria, Cuba, Hungary, Poland, Mongolia, the German Democratic Republic, Czechoslovakia and the U.S.S.R., the allocation of the band 34.2 to 35.2 GHz to the space research service is on a primary basis (see No. 425).