随着400MHz频段电台在大、中城市的需求,研制任务迫在眉睫。本文将较详细地分析一下进口日本400MHz电台样机本振电路的工作原理及其设计思想,这对下一步进行研制会起到有益的作用。该机六个波道工作,为分析方便起见,画出了接收机本振电路一个波道的电原理图(如图1所示)。 With the 400MHz band radio in large and medium-sized cities, the development task is imminent. This article will analyze in more detail the working principle and design idea of ​​the imported Japanese 400MHz radio local oscillator circuit, which will play a beneficial role in the next step of research and development. The machine six wave work, for ease of analysis, draw the receiver circuit of a local oscillator circuit diagram (Figure 1).