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随着我国广播电视事业的发展,各种电视转播设备迅速增加,据不完全统计,全国各种功率等级的台站已达数万个。如何使用和维护好这些设备,特别是县乡级的转播设备,这对于办好我国的广播电视事业,丰富城乡人民的文化生活具有重大的现实意义。本刊应部分读者要求,请北京广播器材厂副总工程师隋锡安和尤巩圻同志,就电视转播设备的技术问题进行专题讲座,从1991年2月起分七讲顺序介绍以下内容:1)电视转播设备综述;2)电视节目的卫星转播;3)电视节目的地面差转;4)转播设备的电子管射频功放;5)转播设备的半导体射频功放;6)转播设备的中频电路和变频器;7)转播设备的射频无功元器件。广大读者对本讲座有何意见和建议,欢迎来信提出。
With the development of the radio and television industry in our country, various kinds of television broadcasting equipment have rapidly increased. According to incomplete statistics, tens of thousands of stations of various power levels across the country have reached tens of thousands. How to use and maintain these devices, especially the broadcast equipment at the county and township levels, is of great practical significance for running our country’s radio and television industry and for enriching the cultural life of both urban and rural people. At the request of some readers, we invite Comrades SUI XIAN and YOU Gong-Gong, deputy chief engineers of Beijing Broadcasting Equipment Factory, to give lectures on the technical issues of the television broadcast equipment. From February 1991 onwards, we will introduce the following contents in the following order: 1) Television Broadcast equipment summary; 2) television programs satellite broadcast; 3) television programs on the ground transfer; 4) broadcast equipment tube radio frequency power amplifier; 5) broadcast equipment semiconductor RF amplifier; 6) broadcast equipment IF circuit and inverter; 7) RF equipment radio frequency components. The majority of readers on this lecture any comments and suggestions, welcome letter proposed.