在你的FM电台上加上一个声音触发开关,用于控制发射或接收信号。同时也给电台增加了数字模式操作的机会。尽管正在寻找一种方式让更多的人可以实现在2米波段使用窄带波段应急消息系统(www.w1hkj.com/NBEMS/)。但是越发清晰的是,在大多数FM电台上没有VOX(声音控制开关)是一块绊脚石。这是因为NBEMS是依赖基于声卡的软件,除了产生发射出的音 Add a tone trigger switch to your FM station to control the transmit or receive signal. It also added the opportunity for digital mode operation to the radio. Although it is looking for a way for more people to use Narrow band band emergency messaging systems in the 2-meter band (www.w1hkj.com/NBEMS/). But what is clearer is that the absence of a VOX (sound control switch) on most FM stations is a stumbling block. This is because NBEMS relies on sound card-based software, except for the emitted sound