无线电报务发报训练器李坚杨开无线电报务训练器是业余无线电通信爱好者的必备工具。下面我们介绍几款发报训练器，供大家参考。发报训练器的基本工作原理就是用电键来控制振荡器输出信号的有无。振荡器可以用分立元件构成，也可以用集成电路构成。集成电路构成的振荡器性... Radio Reporter Trainer Li Jian Yang Kai Radio Reporter trainer is an indispensable tool for amateur radio communications enthusiasts. Here we introduce several hair training trainer, for your reference. The basic working principle of the hair trainer is to use the electric key to control the oscillator output signal. Oscillators can be made of discrete components or integrated circuits. Oscillator made of integrated circuit