本文介绍1981年9月27日在北京举行的国际马拉松比赛电视实况转播~([1]、[2])中微波系统的任务、方案的考虑以及整个微波系统的工作过程、存在的问题和解决方法。1.微波系统的任务和要求微波系统的任务有两个:①把第一和第二移动转播车摄得的图象信号送到沿途固定接 This article presents the tasks and solutions of the microwave system and the working process, problems and solutions of the microwave system as a whole on the live television broadcast of the international marathon race held in Beijing on September 27, 1981 ~ ([1], [2]) method. 1. Microwave system tasks and requirements There are two tasks of the microwave system: ① the first and second mobile OB images taken to the fixed connection along the way