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数字式中波调幅发射机(DAM)进入我省各中波发射台使用已经有多年历史了,相对于脉宽调制中波发射机(PDM),DAM数字调制中波发射机具备效率高、指标好、防雷优等许多优点,但其线路复杂、器件繁多,给维护工作带来了新的挑战,对维护人员的基本功和分析判断能力有了更高的要求。我台于2004年搬迁新址,同时把所有的10kW发射机都换成了DAM
Digital Medium Range Amplitude Modulator (DAM) has been used in various middle wave launching stations in our province for many years. Compared with the pulse width modulated midwave transmitter (PDM), the DAM digital modulated midwave transmitter has the advantages of high efficiency, Good, lightning protection and many other advantages, but the line complexity, a wide range of devices, to the maintenance work has brought new challenges to maintenance personnel basic skills and analytical judgment have higher requirements. In 2004, I relocated the new site and replaced all 10kW transmitters with DAM