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一、明线铁线高频复用的意义和可能性 与世界现状比较,我国通信水平很低,通信设施也很落后,我省则尤为严重,通信线路明线的比重很大,地专以下,特别是广大农村,基本上都是铁线,有些地区的铁线比例,差不多为100％。 党的十二大的强劲东风,肯定会加速改变这个状况,但是要从根本上改造我省这个面广、量大、网宽、基础条件差的通信设备现状,是需要物资费用和时间的。何况,根据不同地区通信要求,铁线明线,在相当长的时间内,仍将是一种必不可少的通信设施,故研究铁线的高频复用,充分发挥其潜力,是具有现实意义的。是符合“挖潜、革新,改造”精神要求的。 研究明线铁线的高频复用,必须首先了解明线铁线的高频特性。由于我国当前使用在明线铁线上的载波机,频率普遍都在30千赫以下,我厂近十年生产的铁线载波,也一直停留在这
First, the bright line of high-frequency multiplexer significance and possibility Compared with the status quo of the world, China’s low level of communication, communication facilities are also very backward, the province is particularly serious, the communication line is a large proportion of open line, below the college, especially Is the vast rural areas, basically all wire, wire ratio in some areas, almost 100%. The strong east wind of the 12th CPC National Congress will certainly speed up the change of this situation. However, fundamentally transforming the present status quo of communication equipment in our province, which has a large area, large quantity, wide network and poor basic conditions, will cost goods and time. Moreover, according to the requirements of communications in different regions, it will be an indispensable communication facility for a long time. Therefore, it is of practical significance to study the high-frequency multiplexing of wire and bring it into full play of. Is in line with the “tapping the potential, innovation, reform,” the spirit of the request. To study the high frequency multiplexing of bright wire, we must first understand the high frequency characteristics of bright wire. As China’s current carrier line used in the bright line of wire, the frequency is generally below 30 kHz, I plant nearly 10 years production of wire carrier, has been staying here