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共用天线电视(community antenna television system简称CATV)又称电缆电视(cabe television)。它利用高质量电视接收天线,把接收到的电视发射台传来的电视节目与自办节目、卫星地面站解调-调制后的节目进行混合,成为具有足够输出电平的复节目信号,然后再分成若干条干线,经低损射频电缆传送到各个用户。
Common antenna television (community antenna television system referred to as CATV), also known as cable television (cabe television). It uses high-quality television receiving antenna, the TV station to receive the television program from the host program, satellite ground station demodulation - modulation of the program after mixing to become a complex output signal with a sufficient level, and then Divided into a number of trunk lines, low-loss RF cable transmitted to all users.