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Take the United States for example . . .
-- In the USA, there are exactly 100 frequencies for FM stations, 118 frequencies
for AM stations, and 68 channels for TV stations.
-- For each of those types of service, there are probably more stations than that
just within, say for example, 100 miles from downtown Los Angeles.
-- So each radio frequency or TV channel must be shared by several stations
around the country.
That's a part of the job of the Federal Communications Commission (FCC) ...
keeping order among all of the companies that want to put a radio station on
the air in order to broadcast commercial announcements and make money from
advertisers (the main purpose of almost all radio broadcasting); regulating the
requests for frequencies, and managing the grants, in such a way that applicants
all have the same access to audiences, and they all operate in a 'clean' environment
where listeners can hear them without interference.
It's done by maintaining enough distance between users of the same frequency
so that listeners to any one of them will not be bothered by interference from
another one.
To give you an idea of what's involved, I picked some frequency numbers at
random, and then looked them up in the FCC's on-line licensing system. Here's
what I found:
-- AM radio, 1340 on the dial . . . 172 licensed stations, all on 1340 KHz.
-- FM radio, 97.5 on the dial . . . . . 82 licensed stations, all on 97.5 MHz.
-- Television, Channel 11 . .. . . . . . 55 licensed digital stations, all on Channel 11.
Every time you tune your radio to the station you want to hear, there are
actually all of those others on the same frequency ... hopefully located far
enough away from the one you want so that the interference won't be
objectionable. But technically, it's there.
There's one more issue also involved that must be mentioned: A typical "consumer-grade"
radio generally can not completely ignore stations that it may be receiving on the frequencies
next to the one you're trying to hear, either above or below it. When you get far enough away
from the transmitter you're trying to hear, like across the city, or in the next town, there's a
very good chance that your radio will also present you with sounds from those "adjacent channel"
stations, even though they may be much farther away.
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How many radio stations are in Uganda?
The number of TV is ONE, radio stations are currently more than 10
What does Frequency mean in music terms?
Each note has a specific frequency. The frequency is defined by the wavelengths produced by the sound. Just as FM radio stations each have specific frequencies (ie: 96.5), musical notes are the same. Think of an image of a wavelength. The more squiggles, the higher the frequency, and the higher the pitch.
What frequency is rte radio?
88.5FM in the Dublin area and 89.1FM outside of Dublin, is the frequency of RTE 1 radio. For more details, see the link below.
What are the types of jobs that uses radio waves?
Any radio station like ghanatalksradio and many more , has various job posts. For example it can be radio jockey or anchors of any program organized or various Technical posts. Also it can be executive posts also etc….
Are you allowed to play local radio stations in your business for your customers?
That only depends on whether the owner of the business wants to do it, and whether the customers complain. The radio stations love it . . . more ears for their commercials.
How many radio stations are in Uganda?
The number of TV is ONE, radio stations are currently more than 10
Why arent there any more classic oldies radio stations?
The choice of radio stations depends on where you live.
Why is that radio stations such as the British Broadcasting Corporation world service change the frequency at which they broadcast to Africa with the period of the day?
Radio stations such as the BBC World Service change the frequency at which they broadcast to Africa with the period of the day, because propagation effects due to the Ionosphere are different depending on the altitude of the Ionosphere, which depends on the sunlight shining on it. The lower the frequency of a radio signal, the more prone it is to bounce off of the Ionosphere and the Earth. This is known as skip, and it increases the distance the signal can travel. This is why low frequency Ham Radio signals, particularly in the 80 metre band, can travel half way around the world at night.
What does frequency mean in music?
Each note has a specific frequency. The frequency is defined by the wavelengths produced by the sound. Just as FM radio stations each have specific frequencies (ie: 96.5), musical notes are the same. Think of an image of a wavelength. The more squiggles, the higher the frequency, and the higher the pitch.
What frequency meaning in music?
Each note has a specific frequency. The frequency is defined by the wavelengths produced by the sound. Just as FM radio stations each have specific frequencies (ie: 96.5), musical notes are the same. Think of an image of a wavelength. The more squiggles, the higher the frequency, and the higher the pitch.
What does Frequency mean in music terms?
Each note has a specific frequency. The frequency is defined by the wavelengths produced by the sound. Just as FM radio stations each have specific frequencies (ie: 96.5), musical notes are the same. Think of an image of a wavelength. The more squiggles, the higher the frequency, and the higher the pitch.
What is the use of local oscillator?
A local oscillator generates a radio frequency signal that mixes with the incoming signal in a superheterodyne receiver to produce an intermediate frequency (IF) signal. This IF signal makes it easier to process and extract information from the incoming signal. The local oscillator helps in tuning and filtering the desired signal from the incoming radio frequency spectrum.
define medium (in regard to waves)?
Medium wave is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band.
How has radio evolved over time?
The radio has changed in many ways. Like now you listen to the radio in mp3 players or in the car you can even liten to it in your computer or laptop.
Does Sirius radio have more stations that XM?
Sirius and XM recently merged, so they now share all stations.
How many radio stations are there in Cambodia?
More than 100 for FM and Few for AM.
What frequency is rte radio?
88.5FM in the Dublin area and 89.1FM outside of Dublin, is the frequency of RTE 1 radio. For more details, see the link below.
