in the receiver is used to separate the desired radio frequency signal from all the other signals picked up by the antenna‚ an electronic amplifier is used to increase the power of the signal‚ and finally recovers the desired information through demodulation. The receiver produced the information may be in the form of sound (an audio signal)‚ images (a video signal) or data (a digital signal). A radio receiver may be electronic equipment‚ or an electronic circuit . Television sets‚ radar equipment
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In 1945 Arthur C. Clarke wrote an article entitled "The Future of World Communications" for the magazine Wireless World. This article‚ which the editors renamed "Extra-Terrestrial Relays"‚ was published in the October issue. In it Clarke described the properties of the geostationary orbit‚ a circular orbit in the equatorial plane of the earth such that a satellite appears to hover over a fixed point on the equator. The period of revolution is equal to the period of rotation of the earth
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charged while u talk. No more worrying about forgetting to charge the battery. Sound Impossible? The present discussion is to charge the mobile while talking over it. This task can be implemented by making use of the carrier signal obtained after the demodulation of the received modulating signal of the mobile to recharge the cellular phone battery without wires. This concept basically needs the conversion of AC signal into DC to facilitate the battery charging along with circuitry to raise
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BHARAT SANCHAR NIGAM LIMITED (A GOVT. OF INDIA ENTERPRISE) OFFICE OF THE C.G.M.T. AMBALA ***** RECRUITMENT OF TELECOM TECHNICAL ASSISTANT (TTA) for Haryana Telecom Circle Applications are invited from the eligible candidates for recruitment of 156 number of Telecom Technical Assistants by Haryana Telecom Circle for its various 09(Nine) Secondary Switching Areas (SSAs) as per details given below:Category wise Vacancies Physical Handicapped SC OBC Loco Hearing Name of SSA Total
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MODERN TRENDS AND TECHNIQUES IN HF RADIO COMMUNICATION CHAPTER I INTRODUCTION OVERVIEW In times of increased necessity for international crisis management‚ secure and protected Radio communications especially at sea are more important than ever before. Mobile Naval forces require reliable‚ jam resistant and secure voice and data connections. Standardized communication media‚ such as email‚ internet via radio‚ has long been part of today’s naval communication and is now indispensable
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43 DATA COMMUNICATION AND NETWORKING 1. Introduction Data Communication is a system consisting of carries and related devices used to transport datafrom one point to another. Communication means to convey a message‚ an idea‚ a picture or speechthat is received and understood clearly and correctly by the person for whom it is conveyed. Ancient Methods of Communication and Their Demerits – Message were sent in olden timeseither through horse riders or by using pigeons. There was no surety that
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West Bengal University of Technology BF-142‚ Salt Lake City‚ Kolkata-700064 Revised Syllabus of B.Tech in AEIE(To be followed from the academic session‚July 2006 ‚i.e. for the students who were admitted in Academic Session 2005-2006) (All periods will be of at least 50 minutes duration) SEMESTER – III Sl. No. Theory 1 2 3 4 5 6 PRACTICAL 7 8 9 10 Subject Code EE 301(EI) EC 301(EI) M 302 EC 302(EI) EE 302(EI) CS 302 EE 391 EE 392 EC 392 M(CS) 382 Subject Circuit Theory and Networks Discrete Electronic
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BOOK REVIEW IN COMMUNICATIONS CHAPTER 2 # Electronic Communications System By Wayne Tomasi SIGNAL ANALYSIS AND MIXING DEFINITIONS TERMS 1) Electrical signals of which amplitude changes continuously with respect to time with no breaks or discontinuities. Analog Signals 2) Electrical signals that are described as discrete; their amplitude maintains constant level for a prescribed period of time and then it changes to another level with respect to time with no breaks
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indication and announcement system using RFID and GSM techniques. 7. Micro Controller based rolling display with GSM techniques. 8. Vehicle Tracking System using GPS and GSM technology 9. Automatic robotic Vehicle navigation using RF-FSK and GSM techniques. 10. Interfacing finger print module with micro controller and use of GSM techniques for Multi level bank locker safety system. 11. Enquiry System using GSM techniques (with VB for PC interfacing) 12. RFID and GSM based
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GALILEO Guide Focalpoint Shopping Galileo Switzerland AG Training Administration‚ Case postale 776‚ 1215 Genève 15 Tel. 022 791 70 62 / Fax 022 791 70 60 Email : swisstraining@travelport.com Mar-09 www.galileo.ch SUMMARY Focalpoint Shopping FOCALPOINT SHOPPING ....................................................................................... 2 General overview .................................................................................................... 2 Focalpoint
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