635型录音机是我国60年代生产的广播专用设备,已不能满足目前的技术要求。营口广播电台过去曾对该机的电路部分进行过多次改进,但收效不大。这次我台委托广电部石家庄录音机厂磁头专家苏桐新先生专门设计制作的新录、放磁头(简称新635)经上机试用可大幅度地改善和提高原机的电声性能。 根据国标GB544O-85规定,甲级录音机应达到 635-type recorder is China’s 60’s production of radio equipment, can no longer meet the current technical requirements. In the past, Yingkou Radio had made many improvements to the circuit of the aircraft, but with little success. This time I commissioned Shijiazhuang, Shantou, Zhuhai, Shantou audio plant head specialist Mr. Su Tong new design, recording head (referred to as the new 635) trial by the machine can greatly improve and enhance the original machine’s electro-acoustic performance. According to the national standard GB544O-85 provisions, Class A recorder should be achieved