... and its Application）上公布的日本赤城县的实验表明,PLC 的应用可能产生不可预知 的电磁污染，具体地讲，会对HFBC（高频广播），以及固定的、移动的、业 余的等无线电服务产生危害，得出的结论是需在电线传输的技术上进行技术突 破。
基于12个网页-相关网页
甚高频广播 vhf broadcasting,vhf broadcasting
高频广播会议 high frequency broadcast conference ; HFBC
试验性高频广播时间表 tentative high frequency broadcasting schedule
特高频广播 uhf broadcasting
高频广播的衰减允许 Fading allowances in HF broadcasting
而当超高频广播出现时，每个频道基于同样的理由，也加上了空闲的“保护频带”。
When UHF broadcasting came along, empty “guard bands” were added to each channel for the same reason.
而当超高频广播出现时，每个频道基于同样的理由，也加上了空闲的“保护频带”。
When UHF broadcasting came along, empty "guard bands" were added to each channel for the same reason.
因为甚高频无线广播中，两个模拟频点之间的频道必须留着不用，为的是不干扰邻近频道。
In over-the-air VHF broadcasting, the channel between two analogue stations had to be left unused so that it would not interfere with adjacent ones.
应用推荐