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由四川省邮电科研所研制的新的载波设备——明线超十二路载波机于最近通过了省级技术鉴定。省科委、省邮电管理局、成都市电信局、重庆市电信局、邮电部第五研究所、省石油局等十一个单位的六十位代表出席了会议。会议测试组对开在成都—眉山((增音站)—乐山间(明线全长163公里,2.5mm铜线,入局电缆总长13公里)的2ZD83—Ⅰ型(开通一年多)明线超十二路载波电话设备进行了测试审议。对其中接收发送电平、杂音电压、频率
The new carrier equipment developed by the Sichuan Posts and Telecommunications Scientific Research Institute --- Ming Line Super 12 Carrier recently passed the provincial technical appraisal. Sixty representatives from eleven units including Provincial Science and Technology Commission, Provincial Posts and Telecommunications Administration, Chengdu Bureau of Communications, Chongqing Municipal Bureau of Telecommunications, No. 5 Institute of Posts and Telecommunications, and Provincial Petroleum Administration attended the meeting. Conference test group opened in Chengdu - Meishan ((add station) - Leshan (Ming line length of 163 km, 2.5mm copper, incoming cable length of 13 km) of the 2ZD83-Ⅰ type (open more than one year) Two-way carrier phone equipment has been tested for consideration.For which to send and receive level, noise voltage, frequency