【摘要】 本文通过对采用不同下行频率(如714兆赫UHF频段及12千兆赫频段)的卫星广播电视系统有关情况的分析比较后提出,根据我国现有的具体情况,选用较低的下行频率(如620～790兆赫UHF频段),乃是发展我国卫星广播电视切实有效的措施。更多还原

【Abstract】 Through comparing and discussing about using different down freguencies (for example, UHF, 714MH_z and SHF, 12GH_z )in system of Satellite broadcast television, the writer recommends it is practical and effective measures for developing the satellite broadcast television to use lower down freguency (for example UHF 620～790MH_z )in our country.更多还原