geosynchronous satellite?
952929
yes, so that it can maintain as close as possible it's position above a specific geophraphical area as the world spins.
531807
If the satellite is designed for use in GEO, It would not be much use in any other orbit. That is because satellites in GEO are always in the same part of the sky as seen from the ground. Home TV broadcast satellites are in GEO, so you just have to point your dish antenna at the satellite when you install it and then fix it permanently it in place. To communicate with a satellite in any other orbit you have to have a computer controlled motorized antenna that follows the satellite as it moves across the sky. And the moving satellite will rise and set, like the sun, and be impossible to communicate with it when it is below the horizon, because radio signals travel in strait lines and cannot go through the Earth. In very low orbits the satellite may be above the horizon at your city for only few minutes each week!
1177901
Palo Alto CA (SPX) Jun 09, 2006\n Space Systems/Loral announced Thursday it has been chosen by Sirius Satellite Radio Inc. to build SIRIUS FM-5, a powerful new geostationary satellite for use in its satellite radio service. SIRIUS FM-5, expected to be completed in the fourth quarter of 2008, will carry an X-band uplink and S-band downlink payload. The satellite will be one of the most powerful ever constructed, with end-of-life power capability at more than 20 kilowatts.
137399
A comsat is used specifically as a relay. It typically doesn't have any optical equipment, which weather satelites employ.\n\nAlso, comsats typically have a geosynchronous (a.k.a. "Clark") orbit, where weather satelites typically have polar orbits so they can get a better "spread". A polar orbit lasts about 90 mins which is why you see the delay between satelite weather photographs on the news. A geosynchronous orbit makes the satelite appear steady from the earth, thus able to act as a relay.
561289
The answer is yes, and it's done all the time, for various reasons, and in various ways.\n\nThere are lots'a different satellite designs, depending on  the intended use. Steerable antenna beams can be designed to be moved either mechanically or electronically. \n\nAnd yes, sometimes the satellites are moved around in orbit, but not often.  Moving requires energy, and providing such energy, however it's done (and there are lots'a ways) is expensive in cost and payload.  \n\nYou asked a good question - you're a thinker! Hope this helps.\n\nGood luck!
160814
It has to be at the equator.  It is the same reason that geostationary satellites are in orbit over the equator ...they always remain in the same position over the same spot of the Earth.
157367
The most common satellites use a C-Band frequency which "Beams" down the programs that we watch. Star Choice, Bell Express Vu, Directv, etc all use this type of frequency for that purpose. Those same satellites all use Ka-band and Ku-band for other purposes as in Satellite Internet and so on.\nAs for the names of each one, thats a little tougher, there are over 180 satellites in the sky for commercial use.\nThis site has a list of those satellites in order by what area of earth they are "beaming" to. http://www.lyngsat.com
242244
The theory behind orbiting is to get the centrifugal force to equal the force of gravity. Without centrifugal force the object would fall. Without gravity the object would go in a straight line. The faster the object of course the greater the centrifugal force. The higher the object is the less the gravity, geosynchronous orbit is at 35,786 kilometers.\n\nSo in order to orbit you need gravity. Like the earth hasn't escaped the suns gravity. It is just a a distance and speed where the centrifugal equals the force created by the gravitional pull. Same with the moon orbiting the earth.
1177455
Roughly speaking there are about 6,200 transponders available on commercial communications satellites in operation. In the unlikely case that they would all be used for data transmission, we could estimate that there is a total capacity of about 450 Gbps available via satellite. Compare this to a single undersea cable...\n\nhttp://www.jisc.ac.uk/index.cfm?name=sat_report5#5.2.1\n\n\n▬♂http://www.the-saudi.net/vsat/vsat-internet-faqs.htm\n\nvsat\n\n▬♂http://www.linksystems-uk.com/pages/services/vsat/idirect.htm
330241
Well the moons rotation is not a problem because it is tidally locked with the earth. It always has the same face pointing towards to earth.\n\nThere are a few reasons why it isn't practical to use it as a satellite. As has been mentioned above it is expensive to get there, and it is far enough away to have a significant delay in transmission.\n\nApart from that, there is another reason. When we deploy satellites we generally want to have extremely precise orbits. We may want a geostationary orbit, so the satellite is always in the same position relative to the earth, or we may want a satellite that covers the whole earth at one time or another. With the moon we have absolutely no control over its orbit, so unless you're lucky enough to have it in exactly the right orbit for you (highly unlikely), it's pretty useless.
193168
Geosynchronous orbits are at an altitude of 40 thousand km.\n\n An observer in such an orbit will observe as follows. \n\nIf he makes one revolution per day (earth time) in his orbit around the earth in the direction of earth’s rotation, the earth will exhibit always its one side.\n\nIf he makes one revolution per day in the opposite direction of earth’s rotation, the earth exhibits its entire surface to the observer by rotating itself twice per day. Similarly, we on the Earth will view the observer two times for a period of 0.25 day moving from East to West.\n\n If he makes one revolution per day in the same direction of earth’s rotation, the earth exhibits its entire surface to the observer by rotating itself twice per day but in a direction opposite to the previous one. Similarly, we on the Earth will view the observer two times for a period of 0.25 day moving from West to East.\n\n Instead of speed I am referring revolution per day because it is directly proportional to the revolution per day when the distance from the center of earth is fixed.\n\nIn the so called lower Earth orbits (up to 1400 km) there are 8000 satellites which are about 10 cm long   orbiting now around our earth with various speed and various directions. Some of them revolve the earth once in one hour.\n\nI am answering for unasked questions because just to reveal the fact that there are objects revolving around our earth with various speeds (more than the earth’s rotational speed) in various directions.
990630
Maybe a geosynchronously orbiting satellite. Those are satellites that rotate with the Earth so it appears that they don't move from our perspective.\n\nObviously, anything else (including stars) would move as the night progressed.\n\nHope that helps.
575491
russi satellite called SPUTNIK...
337304
A satellite transmits signals to the earth.it tracks the object by moving with the same speed as that of the car
1120327
3-\nGOES-10 (West) and GOES-12 (East).  Goes-11 is in orbit but is not in operation; it is in case GOES-10 or GOES-12 has a problem it can take over while they are being repaired.\n\n**These are meteorological satellites.  As far as total geosynchronous satellites, there are approx. 300
119951
There are two types of Sattelites. namely polar sattelites and Geosynchronous sattelites. they are classified according to the orbit that they follow.
175401
Do you mean satellites like AO-51, which is used by amateur radio enthusiasts (Hams)?\n\nThe best source to start would be AMSAT, The Radio Amateur Satellite Corporation.  The link to their website is in "source(s)."