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this depends on if you are using amplitude modulated (am) or frequency modulated (FM) waves. am waves have a fixed frequency, and so can be sent a lot further, but do not give good signal quality because the amplitude carries the data and therefore it is affected badly by interference. FM waves have a constant amplitude, meaning they have better quality, but the frequency contains the data, meaning it changes all the time and therefore cannot be used for very long distances
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What is the difference between FM and PM?
FM - frequency modulationPM - phase modulation1. FMused to vary/change the instantaneous frequency of a carrier wave for transmission2. PMused to vary/change the instantaneous phase angle of a carrier wave for transmission
In AM transmission the frequency which is not transmitted is?
audio frequency
What is the effect of frequency change on transmission losses?
Higher the frequency, higher the losses.
How do you change the speed of motor without change pole and frequency?
On an AC motor you basically vary the frequency on a DC you can vary the voltage.
How does the frequency vary with the length of a pendulum?
The frequency of a pendulum varies with the square of the length.
Does gravitational field effect the satellite frequency?
No. Gravity effects its' orbit but not its' transmission frequency.
Why do you not use frequency modulation in long range transmission?
Frequency modulation is not used for long distance transmission because it has the problem of limited band width.
How does the amount of energy carried by electromagnetic waves vary by frequency?
You are asking two Questions at once: How does the energy of the different waves of the spectrum vary with frequency? and How does the energy of the different waves of the spectrum vary with wave length? f (Frequency) = c / Lambda.
How does the pitch of sound vary with frequency?
pitch corresponds directly with frequency, so as frequency increases, so does pitch.
Webex bandwidth requirements?
Transmission bandwidth depends on modulating signal frequency and carrier frequency
How does frequency of a pendulum vary with its length?
The frequency of a pendulum is inversely proportional to the square root of its length.
What are the reasons that low frequency parameters cannot be Measured in microwaves?
(a) voltage and current readings vary with position along the transmission line, (b) voltage and current are difficult to define in non-TEM transmission lines.
