标签归档:杂文杂载
Ku波段带高频头
单极化单输出、双极化双输出、双极化单输出 1 波段单极化单输出、双极化双输出高频头技术指标、 接收频率:H 11.95-12.75GHz V 11.95-12.75GHz 噪声系数:0.5dB(Typ.) 转换增益:68dB(Typ.) 增益平坦度:0.5dB/27MHz 馈源形式: 镜相抑制:45dB(Min) 输入接口:WR-75 本振频率:11.00GHz 本振频率稳定度:1.0MHz 25 3.0MHz -40–+60 相位噪声:-80dBc/Hz(1KHz Offset) -90dBc/Hz(10) -110dBc/Hz(100) 输出频率:950-1750MHz 输出电平;(1dB) 5dBm(Min) 输出回程损耗:7.5dB 输出接口:75 直流工作电流:200mA(Max) 工作温度:-40- +60 2 KU 波段双极化单输出高频头技术指标: 接收频率:H 10.70-12.75GHz V 10.70-12.75GHz 噪声系数:0.7dB(Typ.) 转换增益:50dB(Min)–60dB(Max) 增益平坦度:=0.5dB/27MHz F/D 馈源形式:偏馈; 交叉极化隔离度:20dB(Min) 25dB(Typ) 镜相抑制:45dB(Min) 输入接口:WR-75 本振频率:9.75/10.00/10.60/10.75/11.25/11.30GHz 本振频率稳定度:1.0MHz 25 3.0MHz -40–+60 相位噪声:-60dBc/Hz(1KHz Offset) -80dBc/Hz(10) -100dBc/Hz(100) 输出频率:950-2150MHz 输出电平;(1dB) 0Bm(Min) 输出回程损耗:7.5dB 输出接口:75 直流工作电流:150mA(MAX) 极性转换电压:V11.5-14.2V H 15.8–19.0V 工作温度:-40- +60
C波段高频头
单极化单输出、双极化单输出、双极化双输出; 接收频率:3.4-4.2GHz 输出频率:950-175MHz; 本振频率:5.150GHz; 输入馈源形式:正馈 噪声温度:17k(Typ.) 增益:67dB(Tyb.) 增益平坦度:+1dB/36MHz; 本振频稳定度:+10MHz 25 2.5MHz -40– +60 镜相抑制:40dB(Min) 输出电平:0dBm(Min) 输出回程损耗:7.5dB 输出接口:75 F Type Female 直流工作电流:150mA(MAX) 工作温度:-40–+60
第8号台风凤凰路径图
第8号强台风"凤凰"
今年第8号强台风"凤凰",今天5时中心位于北纬23.3度,东经
121.9度,就是在台湾省花莲县东南方约85公里的海面上,中心气压955
百帕,近中心最大风力14级,风速45米/秒,七级风圈半径480公里,十
级风圈半径150公里。“凤凰”中心目前正以每小时20公里的速度向西
北偏西方向移动,将于今天7时前后在台湾花莲附近沿海登陆,并可能
于今天上半夜在福建省连江到厦门之间沿海再次登陆。
今天崇武以北沿海东北风转偏南风9-10级,阵风11-12级;崇武以
南沿海偏北风转偏南风7-8级,阵风9-10级。“凤凰”中心经过的附近
海面风力可达11-13级。29日白天,全省沿海偏南风,崇武以北沿海风
力8-9级,阵风10-11级,崇武以南沿海风力7-8级,阵风9-10级。29日
夜里到30日早晨,全省沿海偏南风,崇武以北沿海风力7-8级,阵风
9-10级;崇武以南沿海风力6-7级,阵风8-9级。
今天,沿海各市的部分县市风力可达7-9级。
今天沿海各市有大阵雨或雷阵雨,其中宁德、福州、莆田、泉州四
市的部分县市有大暴雨,局部县市或乡镇有特大暴雨;厦门、漳州两市
的部分县市有暴雨;内陆各市有中阵雨或雷阵雨,部分县市有大雨,局
部县市有暴雨。29日到30日早晨,全省各市有中到大阵雨或雷阵雨,部
分县市有大雨到暴雨,局部县市有大暴雨。
过程雨量宁德、福州、莆田、泉州四市可达150-200毫米,局部超
过250毫米;内陆各市的西部县市可达50-100毫米;其余地区可达
100-150毫米。
请各地注意防范强风及暴雨带来的灾害。
台湾海峡强台风紧急警报和天气预报
今天台湾海峡偏北风转偏南风9-10级,阵风11-13级。29日白天,
台湾海峡偏南风9级,阵风10-11级。29日夜里到30日早晨,台湾海峡偏
南风8级,阵风9-10级。
今天到29日白天,台湾海峡有大雨,部分海区有暴雨或大暴雨。29
日夜里到30日早晨,台湾海峡有中雨,部分海区有大雨。
福建省气象台 2008年7月28日05时发布
福州市区天气预报
阴有大到暴雨。偏北风5到6级,阵风7到9级转偏南风5到6级,阵风
7到9级。今天午后最高气温28℃,29日早晨最低气温24℃。29日阴有暴
雨。30日阴有大阵雨。
福州市气象台
2008年7月28日05时发布
模拟无绳电话和数字无绳电话的区别
模拟无绳电话→ 在空旷没有障碍物的情况下通话距离为100米。折合150平方米的套房距离
数字无绳电话→ 在空旷没有障碍物的情况下通话距离为150米,音质更清晰保密性更强,可以避免被盗打的情况。折合200平方米的套房距离
另外距离和发射功率(国家规定发射功率为20毫瓦折算距离为100-150所以厂家只能在穿透性能抗干扰性能方面做文章。)为主要关系,数字机器 仅仅在穿透性能上要比模拟的好。
频率说明:手机使用900 M 1.8G 小灵通使用1.9G 普通无绳电话如果到达900M以上甚至5.8G 等军事级通讯频率已经是非常牛刀杀鸡了,所以不必过于追求频率。
频率通讯高频头已经加密,无线网络和无绳电话网络完全是相对独立的,互不干扰。不排除部分质量不好的电话。
个人对于无绳电话说明:初中高中8年的无线电学习20年无绳电话的销售经验维修经验。我说几句
A、所谓的数字电话,就是把声音转化成01信号在主机收到后再把01转化成音频。音质绝对没有模拟的好(当然不是绝对的仅仅纠正大家的消费心理。)现在的数字电话除非行货厂家有保修以外,一般欧洲机器要不然5-6年不坏要坏国内没元件救。就象医学。
B、所谓的模拟无绳电话,就是直接把音频波形转化成信号规律信号发射出去主机再试调,音质好抗干扰性能没有数字的强。
GE26998 26938 26928 无绳电话使用说明
子机按键说明
TALK:按该键接听电话和挂断电话
VOL-/+:音量控制键:在通话按该键可以调节通话时声音的大小
REDIAL键:存储键。用来储存或拨出号码
PROGRAM键:设置拨号方式,按此键再按*键设置为音频,按此键再按#键设置为脉冲
CHANNL:在通话时用该键切换通信频道提高通质量。(频段有干扰时也可以使用它切换)
FLASH键:在待机状态下,按该键进入设置状态,在通话时作闪断用。(按一下进入子机语种选择,按三下进入铃声选择,可调三种铃声)
RINGER(ON/OFF):子机零声开关
座机右侧按键说明:
ANNOUNCE录制对外留言
ANSWER/ON/OFF此键为打开或者关闭自动应答功能
DAY/CHECK调日期键 HOUR调时键 MIN调分、秒键
座机正面按键说明
VOLUME音量调节键
MEMO录制家庭留言
PLAY/STOP播放留言和暂停键
ERASE删除键
PAGE键:按该键呼叫子机(按下此键,子机和主机会同时响起,便于找不到子机时用主机寻找)
座机后面的按键“RING SLECT3-5“调节铃声的次数
指示灯
CHARGE/IN USE 指示灯:当用机器通话时该灯亮。
CHG指示灯:子机在座机上充电时该灯亮
电话操作指南
拨打电话:按一下TALK键,IN USE指示灯亮起,听到拨号音后按您想要的号码就可以通话。通话完毕再按一下子机上的TALK键或将子机放回座机就可以挂断电话,IN USE 指示灯熄灭
接听电话:电话响。拿起子机,按一下TALK键,IN USE指示灯亮起就可以接电话。
重拨:按一下TALK键,IN USE 指示灯亮起听到拨号音后按一下子机上的REDIAL键就可以自动重拨您最后一次拨出的号码。
存储电话号码:在待机状态下按一下MEMORY键就可以,输入要储存的号位(0-9),再按一下MEMORY键,用数字键输入英文或拼音的新名,再按一下MEMORY键,再输入想储存的电话号码,输好后按MEMORY即可。
拨出速拨号码:在通话时按一下MEMORY键,再按号码储存的号码位就可以。
答录机设置说明:
设置日期时间:一直按住DAY/CHECK键机内时间日期便会报出来,正确的日期被选定后放开该键就可以,同样的调节HOUR(小时)MIN(分钟)。按一下DAY/CHECK键可以听到系统播报的时间录制的自动应答提示语:一直按住座机上的ANNOUNCE键,在听到嘀的一声后对着座机前方的话筒录制提示语,如:“这是录音电话。主人现在不在家,有事请听到提示音进行留言。”录好需要听到录好提示音,按一下ANNOUNCE键(提示录音时间不要超过30秒)录音好后按下MEMO键就可以,日期和时间会自动添加到信息的后面
播放留言:按一下PLAY/STOP键,系统会自动播放所有信息。
圐圙 字的解释与读音
中国汉字太nB 了。。。
圐圙 kū lüè
内蒙古方言中一般读作 kū lüàn 或者 kūlüè
蒙古语音译词,又译为“库伦”。
其字型由“口”框住的“四方八面”可形象的表示其意为“城圈”即“围起来的草场”,通俗的说指“网围栏”。在内蒙古方言中指围住的土地,特指牧民为了保护草场不被他人的牲畜破坏而用铁丝网围住的一片草原,称为“草圐圙”。“圐圙”一词现多用作地名,如祁县东观镇南圐圙、展旦召大圐圙等。
河南方言中也有这个词。除了做“圆圈”、“范围”讲以外,还可以做动词,如将某东西圈起来可以说“把它圐圙住”。读“kuluan”。做名词时一般加儿化音,读“kuluaner”。如月晕,可以说“月亮四周有个圐圙儿”。
黑色版网站能省下很多电
显示一个全白的页面需消耗74瓦的功率,而一个全黑的页面却只需59瓦。将这点小差别用在Google上时,你就能发现一件让人惊奇的事情。
Google每天要接受接近2亿条搜索请求,我们假设每次搜索至少在屏幕上显示10秒钟;这就意味着每天Google至少要在不同的电脑上运行55万个小时。让我们再假设每个用户都是全屏显示搜索页面的,那么如果将背景换成黑色将能节约15瓦功率。将这个数据与55万乘起来,黑色版Google每天就能为全球节约8.3兆瓦时电力了。
节约 节约
比尔盖兹的离职(英文)
Sent: Saturday, June 28, 2008 1:40 AM
To: Microsoft – All Employees (QBDG)
Subject: My last full-time day at Microsoft
I want to share some thoughts on my last day as a full-time Microsoft employee.
For the last 33 years, I’ve had the ideal job. It’s been incredibly exciting to come here every day to work with the smartest people in the world to develop breakthrough software. Together, we have built a great company that has profoundly changed the world for the better.
After today, I will be shifting my full-time focus to the work of the Bill and Melinda Gates Foundation while keeping a strong connection to Microsoft.
The fact that I am making a career change does not mean that our work at Microsoft is done. In fact, the most exciting impact of our software is still ahead of us. Everything we have done up to now is just the foundation for the more dramatic breakthroughs to come. As you apply the magic of software to delivering a new generation of innovations, this company will continue to transform the way people communicate, create, and share experiences.
Microsoft is in an incredible position because we have momentum and a great pipeline of products and technologies. Even more important, we have great people at every level. In research and development we have great engineers focused on solving the most pressing challenges in computer science and turning new ideas into innovative products. In marketing, sales, and customer service, our world-class organizations keep getting better.
We also have strong leadership. As Microsoft has grown, one of the most exciting and fulfilling things for me has been to watch new leaders develop.
It starts at the very top. For the last 28 years, I have loved working side by side with Steve. Even now after all these years I am regularly impressed with his energy and insight. I think he and I have enjoyed one of the great business partnerships of all time. Steve has done a great job leading the company since he became CEO in 2000. Steve’s passion for democratizing the power of technology and inspiring customers, partners, and employees will keep us driving ahead.
I am thrilled to have Ray and Craig playing key roles in guiding the company’s strategy. For over a decade I had hoped that we could convince Ray to join Microsoft—and in the three years he has been here, he has made a huge difference in helping us focus on the challenge and opportunity of software plus services. I have worked with Craig for more than 15 years. His ability to anticipate the future direction of technology is a key asset, as is his deep interest in and understanding of emerging markets.
Of course, I’ll continue to be involved in the work of the company as part-time Chairman. As part of this I will help with a handful of projects that Steve, Ray, and Craig select.
As I reflect on the last three decades, the thing I’m proudest of is the role that this company has played in making the power of digital technology accessible and affordable. Software running on personal computers and other devices is the best tool for empowerment in human history. Microsoft founded the personal computer software business and we built the platforms that enabled the software industry to develop. Without your contributions, we would not have succeeded in making our dream of a computer on every desk and in every home a reality for more than 1 billion people worldwide—a dream we will extend to everyone in the future.
As I make the transition to focus more of my time and energy on the Gates Foundation, I am looking forward to applying the lessons I’ve learned—and, in some cases, the technologies that we have developed—to help address some of the critical issues that people around the world face in education, economic development, and health.
I want to thank all of you for your hard work and your dedication. It has been a privilege and an inspiration to come to Microsoft every day. I look forward to the amazing, world-changing innovations you will deliver in the years ahead as you continue the great work this company has always done.
Bill