Satellite in http://www.dslreports.com/forum/r20048234 en Thu, 10 Dec 2009 07:44:18 EDT Thu, 10 Dec 2009 07:44:18 EDT Re: Satellite http://www.dslreports.com/forum/remark,20055447 caveman000 : I thought that the signals sent out to satellites travel at the speed of light (electromagnetic signals)????]]> http://www.dslreports.com/forum/remark,20055447 Sun, 24 Feb 2008 20:27:26 EDT Re: Satellite http://www.dslreports.com/forum/remark,20053844 anon :
said by jstack See Profile :

said by PolarBear See Profile :

The pings can NEVER get better. 22,000 miles will never be any less than 22,000 miles.
It's a lot more than that if you think about it. It's 22,300 miles up, another 22,300 down, then it gets routed to the website on ground, and then finally, it goes back up and down to you. It totals about 90,000 miles.
Er, internet packets are a form of electromagnetism. EM waves travel at ~186,000 miles per second. This means even if it were 90,000 miles round trip, the packets could traverse the distance in about half a second.

The satellites are 22,000 miles above the equator, which means that if you look at the geometry, it will be further away than that from us folks in North America. Nonetheless, it still would take well less than a second for the round trip.]]> http://www.dslreports.com/forum/remark,20053844 Sun, 24 Feb 2008 14:17:59 EDT Re: Satellite http://www.dslreports.com/forum/remark,20053257 PolarBear : And that, my friend, is why satellite internet has such high lags!]]> http://www.dslreports.com/forum/remark,20053257 Sun, 24 Feb 2008 12:15:22 EDT Re: Satellite http://www.dslreports.com/forum/remark,20052644 koam : No, i'm just surprised. I imagined they'd be closer. 22,000+ miles up is nearly three times Earth's diameter. Almost three Earths would fit between Earth's surface and the satellite. That's far!

In contrast, the International Space Station and Shuttle, when it goes to the ISS, orbit at less than 250 miles up. 189-246 miles vs 22,223 miles, a huge difference.]]> http://www.dslreports.com/forum/remark,20052644 Sun, 24 Feb 2008 09:41:48 EDT Re: Satellite - 22,000 miles? http://www.dslreports.com/forum/remark,20051997 anon : Satellites such as these are put into geosynchronous or geostationary orbits, a position where they are in the same apparent place in the sky all the time, or at the same place at the same time each day. That makes them easy to aim at with the ground antenna. Such orbits are always at 22,000 miles up. »en.wikipedia.org/wiki/Geosynchronous_orbit]]> http://www.dslreports.com/forum/remark,20051997 Sun, 24 Feb 2008 07:18:37 EDT Re: Satellite http://www.dslreports.com/forum/remark,20051668 BosstonesOwn :
said by jstack See Profile :

said by PolarBear See Profile :

The pings can NEVER get better. 22,000 miles will never be any less than 22,000 miles.
It's a lot more than that if you think about it. It's 22,300 miles up, another 22,300 down, then it gets routed to the website on ground, and then finally, it goes back up and down to you. It totals about 90,000 miles.
Newer satellites have routing built in. They can actually beam it to a closer downlink and uplink center to try and lessen lag. I have heard they are dropping the latency by as much as 200 ms. Which is a nice drop for satellite.
--
"It's always funny until someone gets hurt......and then it's absolutely friggin' hysterical!"]]> http://www.dslreports.com/forum/remark,20051668 Sun, 24 Feb 2008 00:16:52 EDT Re: Satellite http://www.dslreports.com/forum/remark,20050854 PolarBear :
said by koam See Profile :

and where did you get 22,000 miles from?
Well, I kind of guesstimated it from what I've learned about DirecTV as an installer.

Why, do you not agree?]]> http://www.dslreports.com/forum/remark,20050854 Sat, 23 Feb 2008 20:56:30 EDT Re: Satellite http://www.dslreports.com/forum/remark,20050509 koam : and where did you get 22,000 miles from? ]]> http://www.dslreports.com/forum/remark,20050509 Sat, 23 Feb 2008 19:52:00 EDT Re: Satellite http://www.dslreports.com/forum/remark,20050336 PolarBear : My point was, the distance will never be reduced, thus the pings will never be reduced.

Strato-lites, anyone?]]> http://www.dslreports.com/forum/remark,20050336 Sat, 23 Feb 2008 19:05:55 EDT Re: Satellite http://www.dslreports.com/forum/remark,20049847 jstack :
said by PolarBear See Profile :

The pings can NEVER get better. 22,000 miles will never be any less than 22,000 miles.
It's a lot more than that if you think about it. It's 22,300 miles up, another 22,300 down, then it gets routed to the website on ground, and then finally, it goes back up and down to you. It totals about 90,000 miles.]]> http://www.dslreports.com/forum/remark,20049847 Sat, 23 Feb 2008 17:34:13 EDT Re: Satellite http://www.dslreports.com/forum/remark,20049794 PolarBear : The pings can NEVER get better. 22,000 miles will never be any less than 22,000 miles.]]> http://www.dslreports.com/forum/remark,20049794 Sat, 23 Feb 2008 17:24:56 EDT Satellite http://www.dslreports.com/forum/remark,20048234 anon : Isn't this satellite? Are the pings going to be better, or is this just a huge pipe?]]> http://www.dslreports.com/forum/remark,20048234 Sat, 23 Feb 2008 11:30:30 EDT