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在上世纪八九十年代,微波作为吉林省广播电视传输的一种主要手段,为广播电视播出做出了重大贡献。目前吉林省广电微波站SDH数字干线站34座,电路全长1536.32公里,1995年进行数字化改造至今已经运行13年。模拟支线微波站32座,电路全长1274公里,是在1985- 1996年期间建成或改造成的,已经运行20多年。数字干线站由于当时技术的局限性采用了SDH STM-1数字微波,PDH140M/bs复用传输方式。随着卫星、
In the 1980s and 1990s, as a major means of radio and television transmission in Jilin Province, microwave has made a significant contribution to the broadcast of radio and television. At present, there are 34 SDH digital trunk stations broadcasting radio and television stations in Jilin Province. The total length of the circuit is 1536.32 kilometers. In 1995, the digitalization has been running for 13 years. Analog branch microwave station 32, a total length of 1274 km circuit, was built or converted into 1985-1996 years, has been running for more than 20 years. Digital trunk station due to the limitations of the technology used SDH STM-1 digital microwave, PDH140M / bs multiplexing transmission. With the satellite,