vhf broadcasting
...f preamplifier stage,甚高频前置放大器 vhf channel,vhf channel,甚高频频道 vhf broadcasting,vhf broadcasting,甚高频广播 ..
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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.
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