打开放大器电源，选择节目信号源。
它用来接受电视节目信号。
在开始播放节目信号源之前，必须把音量设定到最小。
The volume should be set to minimum before you begin playing the program source.
对户外现场直播节目信号的安全传输及安全播出提出一些看法。
This text offers some proposals to secure signal transmission and broadcast in outdoor live broadcast.
人造广播通信卫星的出现，使得电视节目信号覆盖全球成为了可能。
The broadcasting satellites make it possible to cover the globe with television signals.
当然这也与一组信号中压缩太多节目有关。
Of course this also with a group of signal compression too much about programs.
当然这也与一组信号中压缩太多节目有关。
Of course this also with a group of signal compression too much about programs.
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