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1979～1982年在四川的成都——温江间建立了一铝外导体单管中同轴电缆360路载波试验段(电缆的结构及技术条件见《电信科技情报》1983年第5期)。试验段有两个无人增音段的电缆采取附挂原长途明线杆路架空敷设,其长度分别为9.398公里和6.817公里(增音段标准段长为10±0.5公里)。这两段电缆敷设后电气性能稳定,气闭性能良好,只发生一次由于汽枪击伤造成的绝缘耐压强度不良故障。长途通信干线电缆架空敷设是一尝试,在几年的施工、维护中体会到架空敷设的长途通信电缆有以下优点,为省内长途通信干线电缆采取附挂原有长途明线杆路架空敷设提供了借鉴。
1979 to 1982 in Chengdu, Sichuan - Wenjiang between the establishment of an aluminum outer conductor single tube coaxial cable 360 carrier test section (cable structure and technical conditions, see “Telecommunications Science and Technology Information” 1983 the fifth period). In the test section, two unmanned amplifying cables were laid over the original long-haul overhead road with a length of 9.398 km and 6.817 km respectively (the standard length of the segment was 10 ± 0.5 km). After the laying of these two sections of cable electrical performance is stable, good gas-closed, only once due to the gun injury caused by poor insulation breakdown strength failure. Overhead communication trunk cable overhead laying is an attempt, in a few years of construction, maintenance of long-distance communication cable overhead laying experience has the following advantages for the province’s long-distance communication trunk cable to take the original long-haul road overhead wiring provided Learn from