Variable audio CTCSS: can temporarily change the channel has been set CTCSS frequency.

可变音频的CTCSS：可以暂时改变各信道上已经设置的CTCSS频率。

youdao

Variable audio CTCSS: can temporarily change the channel has been set CTCSS frequency.

可变音频的CTCSS：可以暂时改变各信道上已经设置的CTCSS频率。

youdao