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Why high frequency is used in communication than low frequency?
High frequency is used because of the the size of antennas used to transmit and receive the communications signal. The higher the frequency the smaller the antenna.
Can you list two reasons that modulation is used for communications transmissions?
To send multiple messages by changing the carrier signal. To be able to use smaller antennas higher frequency means smaller antenna
Why are audio frequencies difficult to radiate?
In order to radiate and intercept energy efficiently, the physical size of the transmitting and receiving antennas must be an appreciable portion of the E & M wavelength.An electromagnetic wave at an audio-frequency ... let's say 1 KHz ... has a wavelength of( c / 1,000 ) = ( 3 x 108 / 103 ) = 3 x 105 = 300 kilometers = about 186.4 milesEven at the nominal limit of the frequency range of hearing ... say 20 KHz ... the wavelength is( 3 x 108 / 2 x 104 ) = 15 kilometers = 9.3 miles.In order to have a fighting chance of successful radio communication at audio frequencies, over reasonable distances using reasonable transmit-power, the parties at each end of the link need antennas measured in miles.There are plenty of other great reasons that we don't use radio at the physical baseband frequencies; but even of there were no others, this reason alone is a pretty potent show-stopper.
What 3 reasons are the reasons water bottles are made out of plastic?
Plastic is waterproof, light in weight and it isn't delicate.
Two reasons why people use simple machines?
The two reasons why people use simple machines are because they make things easier to pull and lift.
What is the Reasons of using intermediate frequency?
what is the reasion of using intermediate frequency in television system
What is one of the major reasons that psychologists use operational definitions?
So that the effects can be measured !
Reasons for modulation?
If voice was to be transmitted at its basic frequency 20-20kc. it will take much time. But by transmitting a very hi frequency media the signal can be there presently. By modulating this frequency by voice and removing the media it can be there instantly.
Why high frequency is used in communication than low frequency?
High frequency is used because of the the size of antennas used to transmit and receive the communications signal. The higher the frequency the smaller the antenna.
What are the some possible reasons for any differences between the measured and theoretical values?
Possible reasons for differences between measured and theoretical values include experimental errors, uncertainties in measurements, limitations of the theoretical model used, incomplete data, and external factors affecting the system being studied. Additionally, human error, equipment malfunctions, and environmental conditions can also contribute to discrepancies between measured and theoretical values.
Is there a beginning to all time?
God There are theoretical reasons that time may not be measured before 10-43 seconds, however this has yet to be proven
Why won't my 1986 jeep wagoneer start?
There is not enough information to answer fully but the main reasons an engine will not start are, fuel/air mixture, electrics and timing. Check that these are all within the parameters set out by the manufacturer
What are the critical parts in a transmitter?
The frequency control portions are most criticall. crystals were used to stabilize frequency and avoid problems with interference or ( harmonics) as it was called. Ham transmitters can be banned if they are off-frequency and produce audible harmonics which can interfere with TV reception. So- for legal reasons, the fine-tuning and Frequency control elements are critical, so are voice or code input jacks, amplifiers. and so on.
How is Shaquille O'Neal?
About 7 ft. He is listed at 7'1" in the NBA, but in the NBA draft combines where he was measured without shoes, he was measured at only 7'0". It is common for the NBA to list the heights of players of players with shoes, or to boost them an inch for marketing reasons.
Why do you never see left door opening microwaves?
From a site dedicated to information about kitchen appliances: Every microwave oven on the market opens from the right. We've received a lot of queries from people looking for left-opening microwaves, and they simply do not exist. While left-opening microwaves might be a better fit in some kitchens, manufacturers have completely ignored this market.
How tall Shaquille O'Neal?
About 7 ft. He is listed at 7'1" in the NBA, but in the NBA draft combines where he was measured without shoes, he was measured at only 7'0". It is common for the NBA to list the heights of players of players with shoes, or to boost them an inch for marketing reasons.
Is Shaquille O'Neal tall?
About 7 ft. He is listed at 7'1" in the NBA, but in the NBA draft combines where he was measured without shoes, he was measured at only 7'0". It is common for the NBA to list the heights of players of players with shoes, or to boost them an inch for marketing reasons.
