Wiki User
∙ 14y agoFollowing components can exist
1. 1000 KHz
2. 1000.3 KHz
3. 1002 KHz
4. 999.7 KHz
5. 998 KHz
Wiki User
∙ 14y agoFor transmission through a radiowave.
yes for transmission of the signal to take place smoothly,digital tranmission needs to be modulated over a carrier
The method of modulation has very little to do with the distance traveled, this is more dependent upon the frequency of the carrier. As the frequency gets higher the wave takes on more and more the characteristics of light. For example microwaves need to have the receiving dishes (antennae) in line of site with the transmitter.In practical circumstances it appears the AM travels further but that is only because AM broadcasts at lower frequencies (typically 526KHz to 1625KHz) (MF) and FM at higher frequencies (typically 88MHz to 108MHz)(VHF)
All communication systems use electromagentic waves which by the law of Superposition of Waves travel independently in any meadium and hence do not interfere but if the frequencies tend to match then the carrier waves with amplitude modulation are more affected and give poor quality sound at the receiving end than the frequency modulated carrier waves.
using two subcarriers and a main carrier signalaudio subcarrier is frequency modulated with audiocolor subcarrier is phase modulated with chromamain carrier is amplitude modulated with sum of video and modulated audio subcarrier & color subcarrier; then lower sideband is suppressed by a filter.closed captions are serial ASCII encoded characters embedded in vertical blanking of video signal
For transmission through a radiowave.
An AM-modulated transmission can be operated on any radio frequency. In the USA, AM commercial broadcast stations are assigned carrier frequencies between 550 KHz and 1.7 MHz.
yes for transmission of the signal to take place smoothly,digital tranmission needs to be modulated over a carrier
It gives frequency modulated signal
carrier signal- use for the purpose of conveying information. modulating signal- causes variations in some characteristics of carrier signal. modulated signal - carrier signal after altration in its characteristics is called modulated signal. example- if you want to see an object (suppose it is an modulating signal),you need light(light is carrier signal) and when light will reflect on object you will be able to see if (that is modulated signal)
recovering the information content from modulated carrier wave
Amplitude, Frequency and Phase
A demodulator detects a modulated wave by separating the modulating signal from the carrier wave. This is done by reversing the modulation process applied to the carrier wave to extract the original signal that was modulated onto it. Different demodulation techniques are used depending on the modulation scheme employed.
low level amplitude modulation occurs when the carrier signal is first modulated and then amplified,whereas in high level modulation,the carrier signal is first amplified and then is modulated.
radio an amplitude-modulated wave in which only the sidebands are transmitted, the carrier being removedhttp://dictionary.reference.com/browse/suppressed+carrier+modulation
A carrier wave can carry information by varying its characteristics, such as amplitude, frequency, or phase, in response to the input signal. This process is known as modulation, where the carrier wave's properties are modified to encode the information being transmitted. The modulated carrier wave can then be demodulated at the receiving end to extract the original information.
Any radio signal, regardless of its frequency, can be amplitude-modulated in order to add information to it. In the US, commercial broadcast AM radio stations operate on carrier frequencies between 540 KHz and 1.7 MHz.