【摘 要】
：
涟水人民广播电台原调频发射天线为多层四面双偶极子水平极化天线,调频发射机标称输出功率为500W,因设备均已使用15年以上,早已进入老化期。天馈系统驻波比在1.2左右,发射机
论文部分内容阅读
涟水人民广播电台原调频发射天线为多层四面双偶极子水平极化天线,调频发射机标称输出功率为500W,因设备均已使用15年以上,早已进入老化期。天馈系统驻波比在1.2左右,发射机经厂家多次维修调试后最大输出不足280W,且多项指标都达不到技术要求,无法保证本县大部分区域的收听要求。因此,
Lianshui People’s Broadcasting Station original FM transmitter antenna for the multi-level four dipoles dipole horizontal polarized antenna, FM transmitter nominal output power of 500W, because the equipment has been used for more than 15 years, has long been in the aging period. The VSWR of antenna-fed system is around 1.2. The maximum output of the transmitter is less than 280W after many repairs and debugging by the manufacturer. A number of indicators fail to meet the technical requirements and can not guarantee the listening requirements in most areas of the county. therefore,
其他文献
完全无锚的国际信用货币体系,至少有六个机制或渠道,会导致全球经济内在失衡。当今世界最重要的经济现象,就是全球经济失衡。许多论者将全球经济失衡概括为三个方面:发达国家
<正> 三合拳的套路动作相当精简实练,一招一式都讲究效果。演练时以刚柔相济,急徐协调,手手发力,劲气贯通,没有花哨动作。对敌时须避其锋芒,引进落空,乘隙施招,顺势借力,即化
In this paper,we study the RSA public key cryptosystem in a special case with the private exponent d larger than the public exponent e. When N0.258 e N0.854,d >
A novel method to design Y-branch waveguides is proposed by using total internal reflection, and the optical properties areanalyzed. The simulated results show
The ligand [1,2 bis(4 pyridinecarboxamido)ethane] (L) and the coordination polymer {[Cu(L) 2(H 2O)]·(NO 3) 2·6 H 2O} n (1) have been synthesized a
一、您的体重应该是多少理想的体重随身高和体态的不同而各异。您可以用下面这个表查看您的身体属于哪种类型,并确定大致接近自己理想体重的数据。
First, your weight sho
Asymmetric synthesis of irnigaine was achieved starting from an enantiopure β amino ester 5 using the condensation of amino alcohol 2 with acetylacetone a
毫无疑问,约翰逊事件是第24届奥运会上的头号爆炸性新闻。当全世界欢声未息之时,人们又面对了难于置信的现实,约翰逊被查出服用了违禁药物。一瞬间,英雄成了骗子,美好变为丑
湖南省长沙市岳麓区坪塘中心学校党总支书记肖国强违规操办儿子婚宴,受到查处。案情通报2015年6月12日,湖南省长沙市纪委通报了5起违反中央八项规定精神典型问题,其中一起为
A new cluster cracking method to synthesize dithiolate metal complexes was reported and four unsymmetric complexes with formula (Me 4N) 2[M(Ln)(SPh) 2] (M=C