As I write this I've just obtained my copy of the BBC Proms Guide for the 2019 season. The good news is that, as usual, the programmes offer an excellent selection of music which will be broadcast on BBC Radio 3 and BBC TV. However, a potential snag is also starting to loom! When TV broadcasting 'went digital' many years ago, the most obvious change was a dramatic increase in the number of stations available. This is because digital methods can be used to group stations together into 'multiplexes'. However, a large chunk of the relevant frequency band has now been sold off to the highest bidders, and this may squeeze out some TV and radio stations.
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机译：在撰写本文时，我刚刚获得了2019年度BBC毕业舞会指南的副本。好消息是，与往常一样，该节目提供了出色的音乐选择，这些音乐将在BBC Radio 3和BBC TV上播放。但是，潜在的障碍也开始隐约可见！许多年前，当电视广播“数字化”时，最明显的变化是可用电视台数量急剧增加。这是因为可以使用数字方法将站点组合在一起，形成“多路复用”。但是，相关频段的很大一部分现在已经卖给了出价最高的人，这可能会挤掉一些电视台和广播电台。
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