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The spectrum (and perhaps the equatorial orbit will soon achieve this status) is widely regarded, like space, as the common property of mankind, but unlike space as a very limited resource. With regard specifically to direct satellite broadcasting, the situation is particularly critical because within the bands on the frequency spectrum presently allocated to broadcasting, only bands 8 and 9 (30 to 3000 mc/s) are free enough of ionospheric interference. Channels in these bands are, however, heavily assigned on a planned basis throughout most of the world. While band 10 (3 to 30 GHz) is clear, technically suitable, and the 11.7–12.7 GHz band has been allocated for broadcasting, home receiving equipment for it is not yet available. (1966 Oslo Report of the CCIR on Direct Broadcasting, 445; cf. A/AC. 105/59, at 12, paragraphs 5 and 6).