本文给出了铝包钢传输线的一般规格和一般特性,並就特性阻抗、频响及衰耗方面与镀锌钢线进行了比较。对各地先后试用铝包钢线的情况,分别列表提供了有关测试数据,证明它的传输性能优于镀锌钢线很多。文章最后还简要地介绍了架设及维护工作中有关放线、接头、故障点距离的测量方法等问题。本文对促进使用铝包钢线来提高农村有线广播的质量是有帮助的。 This paper gives the general specification and general characteristics of aluminum clad steel transmission line, and compares it with galvanized steel wire in terms of characteristic impedance, frequency response and attenuation. Have tried around the case of aluminum clad steel, respectively, the list provided the test data to prove that its transmission performance is better than a lot of galvanized steel. Finally, the article also briefly introduced the erection and maintenance work on the pay-off, connectors, the distance between the fault point measurement methods and other issues. This article is helpful in promoting the use of aluminum clad steel wire to improve the quality of rural cablecasting.