采用J2ME技术实现对架空线路弧垂观测角的计算，将手机计算运用到送电线路紧线施工中，在现场能方便应用并节省计算时间。推导得出的计算方法合理可行，数据准确，提高了生产效率和施工质量。

The J2ME technology was applied in the calculation of sag observation angle for overhead lines, and the mobile phone calculation was used in the conductor tightening construction, which could make field application convenient and save the calculation time. The results show that the rational and feasible calculation method and the accurate data can improve the production efficiency and the quality of construction.