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电视机新品层出不穷，功能也越来越多，面对令人眼花缭乱的电视机市场，给购买彩电带来了疑难。在选购时应注意下面指标：频道尽可能多。如果产品说明书上写着可接收频道470MHz，意味着除能接收到68个无线频道外，还可以接收到38个增补有线闭路电视频道，共可接收106个频道。在
TV new products after another, more and more features, the face of dazzling TV market, to buy color TV to bring trouble. In the purchase should pay attention to the following indicators: Channel as much as possible. If the product specification says 470 MHz of receivable channel, it means that in addition to receiving 68 wireless channels, it can receive 38 additional wired CCTV channels for a total of 106 channels. in