如果房屋外墙挂有电缆，高频机最好设置在远离电缆的一端。另外，普通型高频机电子管机箱有成直角的两个方向是用镀锌铁板固定在镀锌角铁机架上的屏蔽上，辐射弱，应以这两个方向对着电缆或近处的电视用户。
If there is cable hanging on the outer wall of the house, the high-frequency machine should be set at the end far away from the cable. In addition, the common high-frequency machine electronic tube case has two directions at right angles, which are fixed on the shield on the galvanized angle iron frame with galvanized iron plate, and the radiation is weak, so the two directions should be opposite to the cable or the nearby TV users.