一个既闻其“声”又见其“形”的无线电实验朱雨雪（广东三水市西南二中）为帮助学生了解电磁波的发射、接收整个过程以及对音频电信号、高频电信号、高频调幅电信号的特性有较为深刻的认识，我们利用收录机、Ｊ２４６５型学生信号源进行模拟电台播音，同时配置简易示波器... A radio experiment that both heard its “sound” and its “shape” Zhu Yuxue (Southwest Second Middle School, Sanshui, Guangdong) In order to help students understand the launch of electromagnetic waves, receive the whole process as well as the audio and video signals, high frequency electrical signals, AM signal characteristics of a more profound understanding of the use of tape recorders, J2465-type student signal source for analog radio, while configuring simple oscilloscopes ...