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中短波调幅广播

Mid and Short Wave Amplitude Modulation
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摘要 我区有模拟中短波发射台55座,广播发射机165部,总功率1578kW,其中PDM机112部、PSM机15部、DM机38部,传统乙类屏调机已经退出历史舞台。我区中短波发射机基本实现了固态化(除11部短波机和9部中波机外),部分电路实现了数字化,发射机的技术含量在全国处于领先地位,这要归功于"西新工程"在我区实施。针对我区采用中短波发射机的机种较多,数字化、固态化程度较高,广大技术维护工作者接触该类新技术时间较短的情况,特撰写此文,供维护中参考。 There are 55 analog mid and short transmitting machines, 165 radio transmitting machines. The general power is 1578kW, among which we have 112 PDM machines, 15 PSM machines and 38 DM machines. Traditional second rank sharing modulation machines are already out of use now. We started to use solid in mid and short wave transmitting (apart from 11 short wave machines and 9 mid wave machines). Some of the circuits have accomplished digitalization. The technique of transmitting is of leading standard in our country. It is due to the implement of 'Xi-Xin Engineering' in our autonomous region. As we are facing with many different kind of transmitting machines, with high standard of digitalization and solidification and our maintenance work is short of experiences, I wrote the article to discuss some of the problems.
作者 崔海平
出处 《内蒙古广播与电视技术》 2003年第2期23-25,3-4,共3页 Inner Mongolia Radio & TV Broadcast Engineering
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