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选用合理的电视中频,不仅利于电视台的分配;工业生产简便和成本低廉;而且也是关系到千百万观众收看好电视的问题。本文讨论了电视中频选取的原则。并把这些原则用于中国电视制式和频道划分的特定条件下,将可能选用中频的各种情况进行了综合分析;同时与国际上其它国家电视中频选取的结果进行了比较;提出了我国如何选取较为理想的电视中频的建议。
The selection of a reasonable TV IF not only benefits the distribution of television stations; it is simple and inexpensive to produce in industry; it is also a matter of concern for millions of viewers watching TV. This article discusses the principle of TV IF selection. And apply these principles to the specific conditions of China’s TV system and channel division, and make a comprehensive analysis of various situations that may choose IF; at the same time, compare with the results of TV IF selection in other countries in the world; and put forward how to select The ideal TV IF recommendations.