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UHF频段频率范围在300～3,000兆赫(分米波段).UHF电视频段下限在我国、美国、日本和欧洲等都是470兆赫,上限各异,一般接近1,000兆赫,电感导线的长度可与振荡波长相比拟.因此讨论UHF调谐回路从长线理论出发,对UHF调谐线路进行分析和讨论.并对UHF调谐线路进行计算,主要应用数字计算机语言BASIC,按照我国电视标准,国际上的频率划分范围,编写程序计算结果.打印过程分别打印36、48、56、68个频道(即国际上划分标准)计算数据,这对我国启用UHF频段可以提供设计试制参考资料. 频率范围:按13～36频道,频率470～702兆赫;13～48频道,频率470～798兆赫;13～56频道,频率470～862兆赫;13～20频道,频率470～958兆赫.
UHF band frequency range of 300 ~ 3,000 MHz (decimeter band) .UHF TV band lower limit in our country, the United States, Japan and Europe are 470 MHz, the upper limit varies, generally close to 1,000 MHz, the length of the inductor wire can be oscillating wave Therefore, the UHF tuning circuit is discussed from the perspective of long-term theory, the UHF tuning circuit is analyzed and discussed, and the UHF tuning circuit is calculated, mainly using digital computer language BASIC, in accordance with China's TV standards, the international frequency range Program calculation results. Printing process were printed 36,48,56,68 channels (that is, the international division of the standard) calculated data, which enable UHF band in China to provide design trial reference. Frequency range: by 13 to 36 channels, the frequency 470 to 702 MHz; channels 13 to 48, at frequencies of 470 to 798 MHz; channels 13 to 56, at frequencies of 470 to 862 MHz; channels 13 to 20, at frequencies of 470 to 958 MHz.