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改低带Ｕ型机放高带□陈颖宇（广东省阳西县广播电视局５２９８００）３／４英寸的Ｕ型机在我国被广泛地应用于广播电视领域。高带Ｕ型机是在低带Ｕ型机的基础上加以改进而成的，其中一个重要不同点是降频色副载波不同，用低带Ｕ型机放高带时得到的图像只能是黑白的。由子...
Lower with U-shaped machine to increase the band □ Chen Yingyu (Guangdong Yangxi Radio and Television Bureau 529800) 3/4 inch U-shaped machine is widely used in China in the field of radio and television. High-belt U-shaped machine is improved on the basis of low-belt U-shaped machine, one of the important differences is that the color sub-carrier is different. The image obtained when the low belt U-machine is used to increase the belt can only be Black and white. By sub ...