medium used to transfer information from the transmitter to the reciever is known ?
359870
for analog transmission, wave form\nfor digital transmission, on and off bits
1031828
Communication Engineering side of electrical/electronics engineering involves some or all of the following:\n\nAnalyzing the communication link (wireline or wireless), figuring out what factors affect the transmitted signal and the received signal. How much power is to be transmitted, what power levels will the received signal have?, how much bandwidth (frequency space) will the signal occupy, how much interference will be caused to and by the equipment/device being designed, how to meet FCC requirements while effectively performing the function the device is being designed for.\n\nMathematically modelling the communication system by determining the type of signal and the modulation/demodulation scheme, error correction/detection schemes, channel equalization methods all  based upon the communication link/channel.\n\nPerforming actual electronic circuit design (Transmitter circuits, receiver circuits, which include modulators, demodulators, mixers, filters, amplifiers, tuners, transmission line matching networks etc.)and software design (in case of digital processing of the communication systems), testing and troubleshooting the circuit and/or the software, evaluating the performance against actual system requirements.\n\nhope you get the idea...
603427
A very popular method is RF tagging. Small Rf tags are atatched to the ear or the smaller ones are implanted under the skin of the livestock. this is a painless and less tramatic method and allows for additional security.\n\nThe RF tag is a simple small transmitter that when activated by a low frequency signal, transmits a number back to the reciever. This is even used to locate a particular animal on farms that deploy it.
1106438
buy a FM broadcasting set up
168398
There should have been more to the question than that, but here goes...\n\nThe transmission media is the thing or stuff used to transmit the communication signals for a computer.  Until recently, that would have been the cable plugged in to the back of the machine.  Based on how much data it can carry it has a category or cat rating; the higher the number the more it can carry.  CAT3 is commonly used for voice and CAT5e or CAT6 is typical for a data installation.\n\nThere are also older standards like 10Base-2 and 10Base-5 that you don’t see too much anymore.\n\nFor longer lengths of cable, fiber optic cables are used to carry pulses of light sometimes 10 kilometers between endpoints.\n\nThe answer gets a little more complicated when you think about wireless.  Is the transmission media air?  Is it the antennas in the card or in the access point?
903171
Basic information used in AM is amplitude: that's the size from top to crest of the electromagnetic wave used to carry signal from the radio station to your receiver set. This amplitude varies  according to sound. \nIn FM it's the frequency : that's the degree to which waves in the electromagnetic wave  are compressed together. for example, tighly compressed wave represent a high pitch (violin) , low compress a bass sound...\nEither are used as coding techniques to get the signal into a wave sent from emitter to receiver in communications
854524
Radio frequency, or RF, refers to that portion of the electromagnetic spectrum in which electromagnetic waves can be generated by alternating current fed to an antenna
833784
It can't really. The key here is 'information' and information is different from data. The thing is that the data you are sending doesn't contain as much information as you think it does. In other words it can be compressed. So the data you can cram down a phone line is first compressed and then sent in a way that makes the absolute best possible use of the available bandwidth. \n\nit's not worth going into the details of the modulation techniques, in the end they all require a small change in the signal to pass a bit of compressed data and that requires bandwidth. There's no magic in this, just clever physics and software.\n\n(n2thepowerofn below) Lol!
1134884
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
230874
Hey, ive built some circuits....check out:\nwww.techlib.com\nwww.home.maine.rr.com\nwww.hanssummers.com\nwww.angelfire.com\nif they don't work try http:\nthey are all good website to build transmitters/recievers.......or google it
351815
Marconni utilised Bose's discovery in providing a medium that could transmit these waves to a receiver unit (wireless{Radio}) The rest as they say, is history.
98829
rf modulator.\nhttp://www.radioshack.com/search/index.jsp?kwCatId=&kw=rf%20modulator
239908
TRANSMITTER ,RECEIVER, ANTENNA COAX SWITCH, COAXIAL CABLE FOR ANTENNA, ANTENNA, ANTENNA STRUCTURE. 2 EACH. MAKE A SYSTEM.\n\nOR\n\nTRANSCEIVER , COAX , ANTENNA, ANTENNA SUPPORT! 2 EACH. MAKE A SYSTEM.\n\n\nTRANSCEIVER COULD BE FM, OR AM. AIRCRAFT USE AM FOR PLANE TO PLANE AND PLANE TO GROUND. POLICE , FIRE, UTILITIES AND MOST LAND MOBILE USE NARROW BAND FM. CB IS AM MODULATION. THE NEW CB IN HIGHBAND IS 900 MHZ FM THIS IS WHAT YOU CAN GET AT WALMART IN THE LITTLE WALKI-TALKIES! WITH A 6 MILE RANGE!\n\nA SYSTEM IS SYMPLY A SENDING STATION AND A RECEIVING STATION. IT CAN BE VERY COMPLEX OR AS SIMPLE AS A SET OF WALKIE TALKIES. A SYSTEM IS A FUNCTIONAL DEFINITON FOR SOMETHING THAT WORKS!\n\nA SYSTEM COULD REFER TO A SYSTEM THAT YOU USE AROUND YOUR HOME TO KEEP IN COMMUNICATION WITH YOUR FAMILY! OR IT COULD BE A SYSTEM THAT A BUSINESS USES TO STAY IN TOUCH WITH ITS EMPLOYEES! A SYSTEM IS JUST A FUNCTIONAL DEFINITION OF A OPERATIONAL "SYSTEM". IT IS THAT SIMPLE!\n\nHOPE THAT CLEARS THAT UP FOR YOUR!\n\n\nDO ME A FAVOR AND VOTE TO BREAK THE TIE ON YOUR QUESTION ON RADAR AS A DISTANCE FINDER IF YOU HAVENT CHOSEN A ANSWER YET SO THAT ONE OF US WILL GET OUR POINTS !\n\n\nTHANK YOU!!! \n\n\nSEE THE FIRST QUESTION!\nYOU ASKED THIS TWICE\n\nAPS\n\n\nhttp://answers.yahoo.com/my/profile;_ylt=AkNRDPHU4.dwE9DX6LQDRNgezKIX?show=AA10836052\nPOGI N POGI 88 YOU HAVE A PROBLEM YOU ARE NOT SELECTING THE ANSWERS!  YOU ASK QUESTIONS BUT DO NOT SELECT THE ANSWER! BECAUSE I AM SELECTING THE ANSWERS SO FAR FOR YOU ON YOUR QUESTIONS! ME! GET WITH THE PROGRAM! YOU ARE RUNNING OUT OF POINTS! SELECT THE BEST ANSWER YOURSELF! DO NOT LET IT HAVE TO GO TO VOTE! DO YOUR DUTY!  YOU HAVE NO POINTS THIS WEEK!  GET WITH THE PROGRAM!  IF YOU ASK QUESTIONS SELECT THE ANSWER OR DO NOT ASK!\n\nTHERE ARE WAYS OF TELLING!
326662
This is (or was) referred to as "Band 2 VHF"  The other VHF bands being used for purposes other than public broadcast. VHF being "very high frequency", higher than HF (= Short-wave) but lower than UHF (Ultra high frequency, as used for example by normal television transmission) \nIf by "Why?", you mean "Why was this frequency selected for this purpose?" I have no expert knowledge, but presume it was a useful trade-off between the bandwidth required for FM audio transmission, and the area a transmitter could cover effectively.
378826
DLeibowitz nailed it for you.  I could add that the best reception can often be obtained by holding the receiver antenna similar to the transmitter antenna, especially for weak signals such as walkie-talkies.  Both should be held vertical (or horizontal) but parallel at right angles to the line-of-sight.  When riding in a vehicle, there may be dead spots and even how you point the vehicle when parked may help bring in a weak signal, especially with long whip antennas.  The signals will pass through ordinary glass (real old timers used to open their windows!) and wood but can be interferred with by intervening metal wires and objects that act like antennas.  The earliest "radio signals" were sparks (and radio operators on ships at sea were called "sparky").  Your radio may even pick up the "sparks" of an arcing spark plug wire in a car passing by (or the "sparks" of lightning storms even far away).  All home radios used to have antenna connections but AM receivers now often use the house wiring.  FM antennas may be circular rather than straight wires (or even small wire coils within the set).  FM broadcasts are more line-of-sight than AM broadcasts that can bounce off the ionosphere as well as transmit line-of-sight.  Short wave receivers could even receive foreign broadcasts that bounced all the way around the earth (but often faded in and out when the path was interupted).  Exceptionally short radio waves such as used by cell phones need very short antennas and the transmitted waves are very penetrating prompting current concerns that long time use may possibly contribute to brain tumors.  Remember that X-rays that are far shorter (higher frequency) than visible light waves are far more penetrating too.
936965
Analog and Digital systems just imply the type of modulation.\n\nFundamentally it doesn't matter what the carrier frequency is, so sharing bandwidth is okay .... the FCC may disagreed though.
279538
In general, a transmitted signal can be described as s=A*cos(omega + phi).  In AM modulation, you change the amplitude "A".  In FM, you modify the fundamental frequency, omega.  In PM, you modify the phase, phi.\n\nPhase Modulation is heavily used in digital communications.  Modems, satellite TV, GPS, and Wireless LANs (802.11a/b/g) all use variants of binary and quadrature phase shift keying.