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What else can I help you with?
Why do you use high frequency signals for communication and why not very high frequencies?
Low, medium and high frequencies is ideal for long distance communication but it is very sensitive to QRM and QRN because only amplitude modulation can be used on this part of the RF spectrum, FM modulation is not possible, where in the higher frequencies, FM (Frequency Modulation) is a beter option but with the drawback of distance overland. VHF, UHF and UUHF can't overcome obstacles like hills, mountains and large buildings, only line of site communication can be used here, although it can be used for long distance in open space IE. in outer space, like satellite communication.
Why AM is used for long distance communication?
AM has a frequency range of 531 kHz to 1602 kHz and on the other hand FM has a frequency range between 8705 MHz to 108 MHz. If we talk about the bandwidth of AM then it is 1071 KHz and bandwidth of FM is 20.5 MHz.According to the bandwidth FM should be used for long distance transmission but it is not used for long distance but AM is used fir long distance transmissions. the answer is here.Long distance transmissions are also decided by the Spectrum of the Signal in frequency domain by doing the Fouriertransform of the Signal.If we draw the Spectrum of AM waves the we find that their is a main loop in the central part of the spectrum with a high frequency and on the left and right side of this loop their are side loop which are very smaller then the main loop. In FM information can be recover from the main loop only not from the side loops. On the other hand in AM waves all the loops in spectrum is of same size and information can be recover from all the loops.That is why AM is used for long distance transmission.Thnx -Vipin Jasoria
What are the two types of wave communication used in broadcasting?
AM and FM AM=Amplitude Modulation FM=Frequency Modulation Hope this helps
Why FM signal is more local and cannot be transmitted over long distance?
Since FM signals have shorter wavelength and high frequency, it is diffracted much. Therefore it is not suitable for long distance communiation.
Can long distance space commucating be possible in am as well as FM?
No. They dare not for fear of the deadly FM syndrome. This is a little known but fatal disease which aliens get when they us FM cause by the very poor DJs and music played.
Why FM is good than am in communication?
The FM signal is more amune to static in the atmosphere than AM signals.
Advantages and disadvantages of FM transmitter?
The advantages are it travels long and far good for long distance the disadvantages are that it takes a while to transfer back
Do radios use high or low frequencies?
Radios can use a range of frequencies, but they typically operate in the range of high frequencies, which are better for long-distance communication. AM broadcasts, for example, use lower frequencies, while FM broadcasts use higher frequencies.
What is a wireless FM transmitter used for?
A wireless FM transmitter is used to play music files through ones FM radio through wireless connectivity. One can hook up their device and as long as it is set within the proximity of the FM transmission, it will be able to play the music.
Which is used for longer distances amplitude modulation or frequency modulation?
Long-distance radio communication Amplitude Modulation (AM) is the answer, because Frequency Modulation (FM) works at frequencies greater than from 50 MHz and can only be used for line-of-site communication, although it can be used to communicate for long distances into space. For long-distance communication, AM and Single-sideband (SSB) modulation can be used in the high-frequency (HF) range in the region of 30 MHz, but the distance is limited to about 30 to 100 kilometers. If ionospheric conditions are good, however, communicating with someone at the opposite side of the globe is possible, because radio signals bounce off the ionosphere back to the Earth and then back to the ionosphere. This phenomenon is called "skip." If you desire continuous long-distance communication, you need to use the lower band of the RF spectrum: long-wave, medium-wave or short-wave signals. With AM, these frequency ranges are not affected by obstacles like mountains or buildings and are called ground waves, because they follow the contour of the Earth. Hence, with enough power and a good directional antenna, it is possible to communicate around the Earth. The only problem is Static-interference (QRM) on the received signal that can make clear communication next to impossible. Sunspots and other sun activities can also affect this type of communication and can even blank out communication totally, a phenomenon known as "radio silence."
Will an FM signal reach outer space?
Yes, FM does travel in space. In fact I believe that at least some space communication utilizes FM signals (data and voice).
Why FM signal cannot be transmitted over long distance?
FM stations are assigned to a part of the VHF band. VHF only travels in straight lines. It cannot follow the earth's curvature or get past mountains. That limits the range. Its not FM thats the issue, but the assigned transmitter frequencies.
