引言在高中一般是没有振荡器和发射机的,这样就给无线电波发射和接收的教学带来许多困难。因为缺乏直观的演示实验,同学们难以获得实际的知识和技能。甚至有的同学对于在课堂所学的知识发生怀疑,觉得这仅仅是理论,对无线电台的工作怀有神秘莫测的感觉。为了使教学获得实际的效果,我们装置了适用于实验室的、简单易制的电子管振荡器和发射机。这些仪器虽简单,但用以演示电子管的振荡作用、无线电报、电话的发射和接收等实验却有很好的效果。现在我们把它写出来供大家参考。由于笔者水平的限制难免有错误之处,希大家指正。 Introduction In high schools, there are generally no oscillators and transmitters. This poses many difficulties for the teaching of radio wave transmission and reception. Because of the lack of intuitive demonstration experiments, it is difficult for students to acquire practical knowledge and skills. Some students even have doubts about the knowledge they have learned in the classroom. They feel that this is just a theory and they have a mysterious feeling about the work of radio stations. In order to make the teaching practical, we installed a simple and easy-to-use tube oscillator and transmitter for the laboratory. Although these instruments are simple, experiments to demonstrate the oscillation of the tubes, radiotelegraphy, telephone transmission and reception have been very effective. Now we write it for your reference. Due to the limitations of the author’s level, it is inevitable that there are mistakes.