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3.卫星电视接收天线的维护卫星电视接收天线的维护主要有以下三方面:(1)定期检查天线的方位角、俯仰角是否正确,天线调节机构和各部位螺钉是否松动,天线接地、避雷针接地是否良好,高频头输出接头是否松动、有无渗水现象,冬季雪天过后,要把反射面的积雪及时清除。(2)天线的金属构件如有脱漆生锈现象,要及时清
3. Satellite TV receiving antenna maintenance Satellite TV receiving antenna maintenance mainly in the following three aspects: (1) regular inspection of the antenna azimuth, pitch is correct, the antenna adjustment agencies and various parts of the screw is loose, the antenna ground, lightning rod grounding Is it good, the tuner output connector is loose, with or without water seepage, after the winter snow, it is necessary to promptly remove the snow on the reflective surface. (2) If there is rust on the metallic components of the antenna, it should be cleared in time