In fact, due to their lower frequency, at similar RF exposure levels, the body absorbs up to five times more of the signal from FM radio and television than from base stations.

事实上，由于频率较低，在射频接触水平相同的情况下，人体从调频收音机和电视吸收的信号比从基台吸收的信号要多四倍。

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The composite video signal is transmitted as an AM signal and the sound as an FM signal on these channels.

在每个频道中，组合视频信号被当作调幅（AM）信号传输，声音信号作为FM（调频）信号传输。

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In this sense threshold means a sort of transition point like the threshold when an FM radio signal breaks through from being just static to being music (or maybe an AD).

从这个意义上讲，“threshold”意味着一种临界点，就像一个开关，使得FM无线电信号从静止状态到播放音乐状态(或者，也可能是一个广告)的忽然变化。

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It also has Stockport-based Signal FM, as well as Signal 1 and Signal 2 in Staffordshire and Cheshire.

BBC: News | Business | Talk Radio swallows local stations

When your car radio receives an AM or FM broadband signal that is all that is happening it is receiving the signal.

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The FM radio's scanner "found" a station at virtually every legal frequency, even when no signal was present--as well as several channels unusable in North America.

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