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上海市广播科学研究所研制的10千瓦PDM全固态中波广播发射机,于1993年2月在苏州人民广播电台正式投入运行。这是国产第一台1O千瓦全固态中波广播发射机。第二台1O千瓦机也于1O月在苏州投入使用。江苏省台订购的一台、海南省台订购的三台全固态中波发射机也将于1994年交付使用。 该机采用标准化,系列化设计,激励器采用高稳定度恒温晶振,频率稳定度小于1赫。备有外激输入插口,可输入同步激励器的射频信
The 10-kilowatt PDM all-solid-state medium-wave broadcast transmitter developed by the Shanghai Broadcasting Institute was officially put into operation in Suzhou People’s Broadcasting Station in February 1993. This is the first domestic 1O-kilowatt all-solid-state medium-wave radio transmitter. The second 10-kilowatt machine was also put into use in Suzhou in October. A Taiwan ordered by Jiangsu Province and three all-solid-state medium wave transmitters ordered by Hainan Province will also be delivered in 1994. The machine uses a standardized, serialized design, the actuator uses a high-stability thermostat crystal, the frequency stability of less than 1 Hz. Equipped with extrinsic input jack, can input RF signal of synchronous actuator