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一、天线之间要有合理间隔在我国大、中城市里,往往会看到楼房屋顶上室外电视天线林立,相互紧挨的现象。如果各家各户在架设天线时,不考虑相互之间的间隔距离,将会影响收看效果。主要表现有:(1)两副天线靠得很近时会降低电视天线的阻抗,使接收的信号变弱,荧光屏上出现重影;(2)前面的天线对后面的天线会产生屏蔽(阻挡)作用,使后面的那台电视机接收信号变弱;
First, a reasonable interval between the antennas In our country, in the city, often see the roof outdoor TV antenna everywhere, close to each other’s phenomenon. If all households in the erection of the antenna, do not consider the distance between the separation, will affect the viewing effect. The main features are: (1) When two antennas are in close proximity, the impedance of the TV antenna will be reduced, the received signal will be weakened and the screen will appear ghost. (2) The front antenna will shield the antenna behind ) Role, so that behind the television receiver signal weakened;