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In 1948, people living in remote areas could see TV programs by ______ in the Un
In 1948, people living in remote areas could see TV programs by ______ in the Un
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2024-06-13
16
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问题
In 1948, people living in remote areas could see TV programs by ______ in the United States. [br] In tuning system, the Federal Communications Commission had distributed parts of ______ spectrum to 12 television channels which were broken into two groups to avoid interference with existing services at the beginning.
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答案
the very high frequency
解析
该段提到，在两个调谐系统中，FCC一开始是将高频(the very high frequency，频谱分配给12个频道，为了避免跟已经存在的服务互相干扰，这些频道被分成两组。
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