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Radio
A radio refers to an electronic device that works by receiving radio wave (an electromagnetic wave) that has the capacity to broadcast news, speech, music and other audio through the air.
8,296 Questions
Role of radio in disaster management?
Many disasters involve the crippling or destruction of normal communications methods:
- Telephone (especially cellphone) networks may be overloaded.
- Electrical power may be unavailable (especially at a disaster site).
Radios and radio systems that are portable and battery (or generator) powered can avoid the above problems.
On the radio what is wild 94.9 number?
As of the middle of July 2011, there are 71 FM stations licensed to operate
on 94.9 in the US.
Since you didn't mention where you're located, we have no way of knowing
which one you're listening to,
How do you get the radio card?
you get the radio card in the radio tower in goldenrod city,talk to the third lady on the first floor and she ask for you some answers and at the end of the questionaire the lady gives you the radio card.
A radio controlled car or R/C car is a powered (electric or gas) model car driven by a radio control system. Inputs from joysticks (or a wheel and a trigger) on a transmitter are sent to the car's onboard receiver. Radio controlled cars can range from simple "stop and go" cars to competitive racing models, which feature all the complexity and adjustability of a full sized racing vehicle.
How do AM FM radio antennas work?
In order to understand antennas it is helpful to understand electricity and it's effect on metals, so for a comprehensive understanding you should first educate yourself on that subject. However, if you are just curious and would like to have a basic knowledge then consider the following analogy. When you throw a beach ball into a calm swimming pool, you will see waves go out in all directions from the beach ball. The waves will proceed across the pool until they encounter the interference of the edges of the pool. The height of the waves depends both on the size of the beach ball you throw and how much power you put into that throw. Antennas work in the same way. When electricity is "thrown" into the metal of an antenna, the metal reacts to the electricity at an atomic level in the form of a wave. This wave, just like the beach ball wave in the swimming pool, radiates outward from the point where the electricity enters the antenna. Now, because antennas are working with radio waves and not water waves, the waves in the metal of the antenna actually produce waves in the air touching the antenna. The waves also continue outward through the air until they encounter interference which is why you will have difficulty receiving a radio signal deep inside a building. The structure of the building is stopping the radio waves in the air from getting to you, just like the edge of the pool prevents the water waves from getting to you as you sit in your pool side lounger.
How do you install a radio for a 1993 Nissan nx?
Here is a great website to guide you through your 1994 Nissan Stereo installation it even has step-by-step pictures: http://www.installdr.com/InstallDocs/Nissan/PDF/647033.pdf Remember you probably have to get a diversity antenna. I didn't realize that until I had everything installed and tried to turn the stereo on and nothing happened. Even though I had the power hooked up nothing came on. I had to make a quick drive to the Car Stereo Store and get the diversity antenna, then everything worked fine.
What are diffrence between AM radio waves and FM radio waves?
AM stands for "Amplitude Modulation". The sound signal you hear is transmitted by modifying the amplitude of the carrier frequency.
FM stands for "Frequency Modulation". The sound signal you hear is transmitted by modifying the carrier frequency itself.
AM uses a 5Khz bandwidth with additional space to allow for signal separation avoiding interference between stations.
FM requires a wider bandwidth.
AM has lower sound quality and is subject to static from weather conditions and adjacent frequency radio transmissions.
FM has wider bandwidth per channel, due to the better ability to separate noise in the FM bandwidth.
AM has a longer range than FM and with the correct conditions can bounce a signal off the ionosphere allowing for longer range possibly causing interference with far away radio stations on the same frequency.
FM signals line of site only and will drop of after about 50 miles from the station as the earth curves away. To compensate for this, broadcasting stations use high transmission antennas.
How do electromagnets work in radio?
For a given load, the higher the supply voltage, the lower the load current. So, in order to avoid enormous voltage drops along the lines, high energy losses, and the need for conductors with large cross-sectional areas, transmission voltages must be very high. This is achieved using transformers. At the consumer end of the transmission/distribution system, transformers are needed to reduce the transmission/distribution voltages to safe levels required at homes and commercial/industrial loads.
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Correct, but the question was "how", not "why".
An ordinary transformer consists of two separate coils of wire, the 'Primary' and 'Secondary' windings, on a 'Core' consisting of a stack of soft iron sheets lacquered to insulate them electrically from each other, to minimise internal losses.
As the input alternating current passes through the primary winding, it induces an alternating magnetic field in the core. In turn, that induces an alternating current in the secondary winding.
The number of turns in the coils matters: the ratio between input and output voltages, hence between their currents for the same power, is that of the turns; and the Volts and Amps ratios are inverted with respect to each other.
Hence 230V at 1A in a primary winding of 1000 turns will theoretically produce an output voltage & current of 23V at 10A in a 100 turns secondary - assuming the transformer is designed for that 230 Watts (which = Volts X Amps) power rating.
There are no direct electrical connections between the windings and the core. The link is entirely magnetic, but the induction will only work with alternating current. Having said that, there IS a type of transformer whose windings are connected electrically, but the principles are similar.
How can radio sustain culture?
IN THIS ASSIGNMENT I AM GOING TO EXPLAIN HOW RADIO CAN SUSTAIN CULTURE.FIRST AM GOING TO DEFINE WHAT IS CULTURE AND RADIO.culture is
- a particular society at a particular time and place; "early Mayan civilization"
- the tastes in art and manners that are favored by a social group
- acculturation: all the knowledge and values shared by a society
- (biology) the growing of microorganisms in a nutrient medium (such as gelatin or agar); "the culture of cells in a Petri dish"
- polish: a highly developed state of perfection; having a flawless or impeccable quality; "they performed with great polish"; "I admired the exquisite refinement of his prose"; "almost an inspiration which gives to all work that finish which is almost art"--Joseph Conrad
- the attitudes and behavior that are characteristic of a particular social group or organization; "the developing drug culture"; "the reason that the agency is doomed to inaction has something to do with the FBI culture"
- grow in a special preparation; "the biologist grows microorganisms"
- the raising of plants or animals; "the culture of oysters" THEN RADIO IS
- medium for communication
- radio receiver: an electronic receiver that detects and demodulates and amplifies transmitted signals
- transmit messages via radio waves; "he radioed for help"
- a communication system based on broadcasting electromagnetic waves
- indicating radiation or radioactivity; "radiochemistry" THE REST YOU CAN EXPLAIN IN YOUR OWN KNOWLEDGE. from university of limpopo(turfloop campus)MDST 102.
What data communication technology uses low power radio waves to transmit data?
There are many data communication technologies that use low power radio waves to transmit data, including:
- * CDMA (used in most cell phones)
- * FM (used in Family Radio Service walkie talkie)
- * frequency-hopping spread spectrum (FHSS) (used in Bluetooth)
- * direct-sequence spread spectrum (DSSS), used in IEEE 802.15.4, which in turn is used by ZigBee, MiWi, 6LoWPAN, etc.
- * amateur radio operators often try "QRP" operation (very low power) with many different communication technologies: CW (Morse code), AM audio, FM audio, PSK31 and Hellschreiber digital text chat, and etc.
The radio in a 1997 Jeep Cherokee no longer receives FM stations any ideas?
Have you checked the aerial is pluged in to the radio. ---------------------------------------------------------------------- If it's the stock stereo, these go bad eventually......as well as the speaker ports on the back of the stereo... Just replaced mine with an after-market stereo for $99 at Circuit City.... Works fine now...
When was the first radio broadcast made?
A probable first public broadcast of sound and music- as opposed to code and cipher occured in the Christmas season of l906 Broadcast was superintended by one Reginald Fessenden, a Canadian engineer. The equipment used did not utilize tubes which were then just coming out- achieved high-fidelity broadcast of- what else Christmas Carols ( O Holy Night being the lead-off song) and was sponsore by the the National Electric Signal Company- a remote antecedent to NBC. The Broadcast was from a land transmission tower- about 400 feet up- a record for a purpose-built radio antenna for the day- before they started using already- built skyscrapers like Eiffel and Empire State- and still do.
Where is the radio fuse on a 92 miata?
All of the fuses in the miata are located in the engine compartment. Looking at the car from the front, there is a black case near the left hood hinge. Open it, and the radio fuse is in there.
Where is radio fuse located in a Peugeot 106?
If the central locking is still working, then the easiest way to work this out is to pull out each fuse, one at a time only. After you pull one fuse - check the central locking to see if it still works. When the central locking goes dead - that's the fuse that controls it.
The other way around - if the central locking is not working - then pull one fuse out at a time and visually inspect it to see if its blown - make sure you replace the fuse with one of the same amperage - ( they will be marked like , 10A for 10 amps, 20A for 20 amps. ) if there are no markings on the fuse - then make sure that if you pull out a RED fuse then replace it with a new one of the same colour.
This method of testing car electrical fuses will work for any car equipment.
How old to work at radio shack?
16 with a working permit unless you know the manager and they let you work at 14 but you will still need a working permit. 16 with a working permit unless you know the manager and they let you work at 14 but you will still need a working permit. 16 with a working permit unless you know the manager and they let you work at 14 but you will still need a working permit.
Radio won't turn off after engine is shut off on 2000 Ford Explorer Eddie Bauer edition?
The radio is usually supplied power until you open one of the doors. Perhaps what you have is a bad door sensor? Try shutting off the car, and then opening the passenger door and see if it shuts the radio off. If that doesn't fix it, then whatever module the radio is connected to is probably bad.
What are the most popular radio channels?
In the UK, the best three most popular radio channels are: BBC Radio 2, BBC Radio 4* and BBC Radio 1. Other popular radio channels are: Heart, Capital, BBC Radio 5 Live*, Kiss, Smooth Radio and Magic FM.
How much does it cost to operate a FM radio station?
IF you can get a license, you should be able to start a radio station for as little as $10,000. That of course, depends on your transmitter, antenna arrays, transmitting power and whether or not you intend to buy all new, or used. It all varies, depending on your requirements.
How can get Honda Odyssey 2006 radio code?
call Hinda and they will help you. You will need to code that is in the glove compartment.
if you have the code just punch the number that you have on the radio numbers buttons and as soon as you finish punching the numbers your radio will work if you don't have the code contact the nearest Honda dealer and give them the VIN number of you car and they will give you the code for the radio normally this service should be free.
What kind of electromagnetic waves have a wavelength longer than a football field?
100 meters and longer would be 3mhz and lower. Divide the speed of light ( C=3.0*10^8 meters per second) by the wavelength. You get frequency.
Why does your radio turn off when you turn on your lights?
If the car battery at any point got disconnected for charging etc the stereo will automatically go into a shut down mode where a password will need to be put into the stereo to reset it if you haven't got that password you'd have to consult your nearest dealer to reset stereo to factory setting for you or just buy a second hand one. But of the stereo wont turn on at all then its probably a fuse/relay blown
hope this helps worked for mine lol
What software do radio stations use?
For Internet Streams you can use ShoutCast: http://www.shoutcast.com/download
How is radio waves used in our everyday lives or in certain industries?
How about: Cell phones, AM & FM Radio stations, TV stations, Wi-Fi, Medical Diathermy machines, Microwave ovens, Garage door openers, TV remote controls, Bluetooth devices, RF induction heating of metal items in industrial plants, RF MW Heating for drying glue in making wood products, GPS receivers for finding out where you are, Wow the list is just too long to go on. Take it from me there are many more uses....
