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广电部科技司于1997年5月13日在上海主持召开了上海市广播科研所科技项目“25－50kW功率等级的PDM全固态中波广播发射机功率合成技术研究与开发”部级鉴定会。由广电部科技司陈智教司长为主任委员、江苏省广电厅王蕴副厅长、广电部无线局总工张金城、安徽省广电厅总工叶为文、
On May 13, 1997, the Department of Science and Technology of the Ministry of Radio, Film and Television held a ministerial appraisal meeting on the research and development of PDM all-solid-state medium wave radio transmitter power synthesis technology of Shanghai Broadcasting Research Institute Science and Technology Project "25-50kW power level. Director of the Department of Science and Technology by the Ministry of Radio Film and Television Chen Zhijiao as chairman, Jiangsu Provincial Radio and Television Office Wang Yun, deputy director of Radio and Television Radio Chief Zhang Jincheng, Anhui Provincial Department of Radio Chief Ye Wei,