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What uses radio waves to transmitt data signals over short distance and is hampered by needing a direct line of sight?
Wiki User
∙ 10y ago
bluetooth
Wiki User
∙ 10y ago
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Why do they use the radio to communicate?
-- It's easy and cheap to generate radio signals and put information on them. -- It's easy and cheap to detect radio signals at a great distance and recover the information from them. -- It's easy and cheap to pick out the radio signal you want from thousands of other signals. -- Radio can deliver information over great distances significantly faster than carrier pigeons, surface mail, runners, smoke signals, jungle drums, or optical fiber can.
What is radio echo method?
Radio echo method is used for measuring the distance of heavenly bodies. Radio signals are sent towards a planet. These signals are reflected back from the surface of the planet. The time (t) taken for the signal in going to the planet and coming back to earth is noted. The signal travels through a velocity (c).The distance (s) of the planet from Earth is given by,s = ct/2
When was Dream Signals in Full Circles created?
Dream Signals in Full Circles was created in 2000-04.
What kind of program do I need to unencrypt radio signals?
There is a program that that can be used to encrypt radio signals. Doee it have a name?
Why is it harder to receive FM radio signals in some places?
waves spread out as distance gets farther. So at certain places there is no radio. Also if big concrete buildings or bridges in way, radio waves cant get through it because FM signals go in a straight lines while on the other hand am signals scatter so more people can use it Radio broadcasts bounce off of the ionized layer of the atmosphere, the ionosphere, in order to reach more distant receivers, but the state of the ionosphere can vary, and it does not always reflect the way we want it to.
Which cell sends signals over long distance?
That depending on the type of the cable................. If you transmitt over a long distance eventhoogh we can use fiber but it may cost cost effective.......
Is there a diagram for turn signals for a 1968 firebird?
What exactly are you needing to know? I have a 68 Firebird sitting in the driveway. Are you needing to know colors of wires on the exterior bulbs or routing etc for the interior?
Define energy and power signal?
Here Energy signals are limited but power signals can exist to infinite distance. Non periodic signals are energy signals while power signals are periodic.
Information on smoke signals?
Smoke signals is a long form of long distance communication. These signals were used in Ancient China and by the Native Americans and Yamanas.
The earliest form of long distance communication?
smoke signals.
How can you find the distance between two signals?
Assuming you know the coordinates of their position, then it is equal to magnitude of the vector which connects them, or distance = sqrt(x12,...,xn2), where xi such that i = 1,...,n are dimensions of the signals.
Non-endocrine chemical signals differ from hormones in that they?
act locally instead of at a distance
Which transmission media type carries signals over the greatest distance?
Coaxial cable
Why Weak cell phone signals outside the house?
Might because of your distance from a cell tower.
In middle and long distance track races what signals one lap to go?
A ring of the Bell
What is the difference between high frequency signals and low frequency signals in terms of 1 distance that can be traveled 2 transmit power required and 3 susceptability to EMI?
mota
What does AM and FM on the radio stand for?
Amplitude Modulation and Frequency Modulation. They are different methods of transmitting radio signals. AM is good for transmitting radio signals long distance FM is good for transmitting radio signals short distances but better quality
