The waves used to communication, medicine and satelite.
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Every Invention has got both advantages and disadvantages\n\nInvention is just like a knife with two sharp edged one good and other bad
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The station generates the signal.  The carrier wave has to be at the specific frequency for which they are licensed, and can not deviate from that any more than standard modulation is allowed.  They are also licensed for how much broadcast power they use.
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Radio waves are a form of electromagnetic radiation, created whenever a charged object (in normal radio transmission, an electron) accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum. In radio, this acceleration is caused by an alternating current in an antenna. Radio frequencies occupy the range from a few tens of hertz to three hundred gigahertz, although commercially important uses of radio use only a small part of this spectrum.[1]\n\nElectromagnetic radio spectrum \n\nOther types of electromagnetic radiation, with frequencies above the RF range, are microwave, infrared, visible light, ultraviolet, X-rays and gamma rays. Since the energy of an individual photon of radio frequency is too low to remove an electron from an atom, radio waves are classified as non-ionizing radiation.\n\nMobile phones and the network they operate under vary significantly from provider to provider, and even from nation to nation. However, all of them communicate through electromagnetic radio waves with a cell site base station
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actually electronics and comm. engineering comes under one stream only.but taking aspect of industry a communication engineer works in the field of wireless,gsm and other technologies of communication.
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GSM uses TDMA (time domain multiplex). I believe it can handle 8 conversations per frequency channel.
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it is referring to the fact that the moon's gravitational pull affects the waves and tides.
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microwave are the same as radio waves \nsatellite are when you transmit to a satalite \nradio waves are basicly any sound. \nlaser is energy in the form of light, \noptical fiber is used for telephones which transport light instead of radio waves, which is much faster\ninfared it think is just a laser used to transfer data
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It is a broadband system over satelite systems.
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In both cases, information (music, voice, video, whatever) is carried in radio waves (electromagnetic waves).  Think of waves on the beach.  They can differ in the height (amplitude) of the waves, and in the frequency of the waves (how close the waves are to each other).\n\nIn amplitude modulation (AM) ... the information is carried in the changes (modulation) of the amplitude of the radio waves.  All the waves from a particular radio source (e.g. a radio station) all have the same frequency, but different amplitude.\n\nIn frequency modulation (FM) ... the information is carried in the changes (modulation) of the frequency of the radio waves.   All the waves from a certain radio source have the same amplitude, but different frequency.
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it uses mobile wireless communication to communicate with other modems/receivers. It operates through GSM frequency, the same frequency GSM mobile phones use.
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A satellite transmits signals to the earth.it tracks the object by moving with the same speed as that of the car
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A very good, complicated and interesting question.  Katy brought up a good point.  You could write entire book on how cell phones has changed daily life around the world.  Just think of how many business decisions are now done in real time rather than getting to a land line (telephone.)  Or how about a reporter in the field giving a story before he or she has set up the equipment to broadcast the story?  Or how about the reporting of the Iraq war where no broadcasting equipment was even available?  With cell phones, many of which now have cameras built into them, people are taking pictures of crimes as they occur.   This is also true for reporting crimes in areas that didn’t normally have phone access.\n\nSince you didn’t speak of which wireless technology you were referring to I can only assume you are talking about all wireless technology so I will discuss some others here.\n\nIn the last few years wireless networking for home computing has really taken off.  It has become much more affordable and easier to configure for the average person.  Now here is where it gets interesting.   Many new laptops have the ability for you to use a wireless networking adapter in them or with them.  Some cities, including mine in Anaheim California, are going to make the whole city wireless!   They are going to install wireless Internet transmitters all over Anaheim so everyone has a wireless connection to the Internet.  Even people visiting from out of town can use the wireless system but they have to pay a small access fee.   Can you imagine driving across the county someday and being able to access the Internet right from your car?\n\n\nLet us not forget that the first wireless technology started with the radio.  Man discovered radio in the late 1800’s.  Radio technology grew in bits and pieces but by the turn of the century wireless communications had been established.  All wireless routers and wireless Internet communication uses radio waves to send the data.\n\n\nLet us not forget RADAR.  RADAR is an acronym for Radio Detection and Ranging\nand helped us win the world war II.  One of the first uses of Microwave technology was used in RADAR in the world war II also.  Most households now use Microwaves to cook food with so radio waves also help us heat things\n\n\nWhat about television transmission?  Isn’t that also wireless?  Although many people now use cable (because they have paid for premium channels) television is a wireless technology.\n\nAnd others:\n\nRadio transponders to find lost aircraft (also a transponder)\nLo Jack stolen automobile retrieval device (also a transponder)\nNavigation\n\nRadio Frequency Identification (RFID) (also a transponder)\nRadio Frequency Identification is a way to remotely receive data from RFID tags or transponders.  They are used on toll roads and even at Mc Donald’s to buy lunch with a swipe of a small device.  They are used soo much that this needs to be researched all by itself.\n\nWhat all wireless technologies have in common is that they are all based on Radio waves.  All of things that I have mentioned are based on Radio technology \n\n\nP.S.  I usually don’t cut and paste and if I do I will say that, that is what I am doing and explain where that information came from.  I like to read information from multiple information sources then put that information together in my own words while keeping the article technically and factually correct.  And as always, I will point to web sites or other information to prove that my information is factual.
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Microwaves and ocean waves share one common characteristic:\nIt is the transfer of energy through a medium.  The waves have a variable intensity.  For a microwave it is electromagnetic energy traveling at the speed of light with a frequency in the giga-hertz range.  For an ocean wave is the transfer of mechanical energy at a frequency of 1 per 30 seconds or so.  The height of the wave is proportional to the amount of energy and the depth of the water.\n\nIn the case of communications, the microwave energy is modulated to transmit information according to the modulation protocol and frequency.\n\nI hope that helps.\n\nBy the way, microwave energy is used in microwave ovens because the frequency of the microwave causes the water molecules in the food to react and heat.  This is because the water molecule is a bipolar molecule with a resonanat frequency that gets matched up to the microwave and thus converts the electromagnetic energy into kinetic energy, which gets converted to heat.\n\nj
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Not only the power of a signal has to be considered. It is also very important the size of the antena used (the size really matters :)), With a very big parabolic anthena, you can reach farest with the same power.
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Xrays, Alpha rays, Beta rays, Gamma rays, Cosmic rays, Ultra Violet rays.
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Yes. A satellite signal will go through glass and plastic but not solid objects and it will bounce of metal objects. It is possible you might recieve a slight loss in signal strength
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you can use a fm modulator