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1.电视天线的种类用以接收电视信号的天线大体可分室内和室外两大类。其中常用室内天线的种类和特点为:(1)单鞭拉杆天线。(2)双鞭拉杆天线,这二种天线为一般电视机生产时附带的,使用很方便,接收效率较差。(3)羊角天线:结构如图5所示,效能相当于双鞭天线,多为大屏幕,不附带天线的电视机使用,使用比较方便,可以任意转动
1. Types of TV Antennas used to receive TV signals can be divided into two broad categories of indoor and outdoor. The types and characteristics of commonly used indoor antennas are as follows: (1) single whip rod antenna. (2) double whip rod antenna, the two antennas for the production of the general television incidental, easy to use, poor reception. (3) claw antenna: the structure shown in Figure 5, the equivalent performance double-whip antenna, mostly large-screen, without the use of the antenna TV, the use of more convenient, you can turn