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山区接收环境的复杂性与特殊性山区,尤其是边远山区,架设室外天线的成功与否,直接关系到电视机的收看效果,这已是众所周知的常识。有些山区农民,购置电视机后因室外天线架设不当,实际收看效果欠佳,便叹息:“花钱买了个憋闷。”有些人把架设室外天线看得过于神秘,完全机械照搬书本,不敢越雷池一步;有人则把架设室外天线看得过于简单,架设天线时过于草率。山区与平原地区、城市市区的电视接收环境和接收特点,有着明显的差别,其中有许多内在规律尚有待人们去发现、认识,下面试举两例为证:例一,有位农民购回一台14英寸黑白电视机,便开始在房后山梁上试装天线,连试数日,收看效果始终不理想,雪花噪声极大。他气上心来,狠狠地将天
The Complexity and Particularity of Receiving Environments in Mountainous Regions It is a common knowledge that the success of the mountainous areas, especially the remote mountainous areas, to set up outdoor antennas is directly related to the TV viewing effect. Some mountain farmers, after the purchase of television sets due to improper installation of outdoor antennas, the actual viewing ineffective, then sigh: “Some money to buy a stuffy. ” Some people to set up outdoor antenna too mysterious, completely mechanically copy books, Do not dare to leap further; Some people put the outdoor antenna too easy to set up, set up the antenna too hasty. There are obvious differences between the receiving environment and receiving characteristics of television in mountainous and plains areas and urban areas of urban areas. There are many inherent laws yet to be discovered and recognized by the public. The following two examples are cited as examples: A 14-inch black and white TV, they began to test the antenna installed in the room after the beam, and even try a few days, watching the effect is always not ideal, great snow noise. He gasped, fiercely days