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1 概况 新区有线广播电视台成立于1989年10月。9年来,前端主干线改造升级走了三步。1991年初完成全区联网,用户达2万户。前端设备采用九洲牌单频道放大器。使用Z_(11)、Z_(15)、Z_(7)、Z_(8)、Z_(5)等增补频道300MHz系统传送11套电视节目。干线铺设美国500″MC~2电缆7km。干线放大器采用九洲牌JZ30TA—Z—A型。分设十一个频道转换点,利用频道变频器将所使用的增补频道转为800MHz系统。1994年初,采用九洲300—1型中频处理邻频前端。卫星信号和自办节目通过中频
1 Overview New District Radio and Television was established in October 1989. In the past 9 years, the transformation and upgrading of front-end trunk lines have taken three steps. In early 1991, the district completed networking and reached 20,000 users. Front-end equipment Jiuzhou brand single channel amplifier. The use of Z_ (11), Z_ (15), Z_ (7), Z_ (8), Z_ (5) and other supplementary channels 300MHz system to transmit 11 sets of TV programs. Trunk laying the United States 500 "MC ~ 2 cable 7km. Trunk amplifier using Jiuzhou JZ30TA-Z-A type. Divided into eleven channel switching points, the use of channel frequency converter will be used to supplement the channel to 800MHz system. In early 1994, Use Jiuzhou 300-1 IF frequency processing front-end. Satellite signals and self-run programs through the IF