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1972年6月,同心县政府礼堂,战备警报、广播和农用电话一线三通现场会正在召开。与会代表听着由电话线传过来的清晰的话音和警报信号,看着那自行研制的30千赫载波发射机、接受机和用黑铁皮外壳组装的滤波器,人人赞叹不已。来自灵武广播站的技术员小宋听着听着,突然对着正在讲解的发明者大喊了一声:“老金,原来是
In June 1972, the Tongxin County government auditorium, combat readiness alert, radio and agricultural telephone first-line links will be held on the spot. The delegates listened to the clear voice and alarm signals coming over the telephone line and watched the self-developed 30-kHz carrier transmitter, receiver and filter built with a black-tinned enclosure. Xiao Song, a technician from Lingwu radio station, listened and suddenly shouted at the inventor who was explaining: ”Lao Jin, it turned out to be