介绍有线电视邻频系统──Ｕ段中频调制器张祖德（深圳天河电子公司５１８０３１）目前在国内电视节目不断增加，特别近几年“亚洲一号”、“亚太一号”、“中心五号”以及“东方红三号”和“亚洲二号”等信号源升空，将给我国有线电视行业带来更多的节目，所以愈来愈要有... Introduction of Adjacent Cable System in Cable TV──U Section IF Modulator Zhang Zude (Shenzhen Tianhe Electronics Co., Ltd., 518031) At present, the number of domestic television programs is increasing. In particular, in recent years, “Asia One”, “Asia Pacific One”, “Center Five” As well as the signal sources such as “Dongfanghong 3” and “Asia 2” will bring more programs to China’s cable television industry, so more and more ...