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krj wrote in
: Larry, I incorrectly used the term LEO. Technically LEO satellites are those between 300 and 800 miles up. Ic sometimes use the term generically to indicate a satellite not in geo. orbit. I sometimes refer to GPS birds as low earth orbit, but they are actually a little over 10,000 nm up. Sorry if I confused you,but Sirus birds are not geo. They are in an Elliptical Orbit A satellite in elliptical orbit follows an oval-shaped path. One part of the orbit is closest to the center of Earth (perigee) and the other part is farthest away (apogee). A satellite in this orbit takes about 12 hours to circle the planet. Like polar orbits, elliptical orbits move in a north-south direction. Hmm...This may explain why the signals to it at Best Buy's store here sometimes works and sometimes dies. That high elliptical orbit put the satellite at some serious distance (read that attenuation) when it's "way out there" at apogee. We have several ham radio satellites with orbits like these. You can talk to them a long time as they go over the apogee hump. Thanks for the info. All I knew about Sirius was it was near bankruptcy with much-lower-than-expected subscriptions. http://finance.yahoo.com/q/cf?s=SIRI It just bleeds money.....even though some keep priming the pump. |
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