 
ztmike
Mark for moderation
Premium
join:2001-08-02
Michigan City, IN
 ·Comcast
1 edit | Shows what i know..me=dumb I thought satellites that were released in space never die unless something dies that couldn't be possibly fixed?
Unless something that dies that keeps it in orbit..
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"I am the worst president in U.S history, I'm either stupid or dumb most of the time, but people still believe me." George W. Bush | |
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wolfox
Gentle Wolfox
join:2002-11-27
Dunnellon, FL
| Re: Shows what i know..me=dumb Satellites carry a finite amount of compressed gasses on-board that are used through it's lifetime to correct it's place in space. Especially on geo-synchronous birds. When they run out of spritz, they fall from orbit and die.
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The RIAA killed my legal webcast. Sadly it will never be mourned... | |
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drjim
Premium,MVM
join:2000-06-13
Torrance, CA
clubs:
| Re: Shows what i know..me=dumb They don't "fall from orbit". When the onboard consumables get low, they let it drift North-South for a while, and then use the remaining fuel to boost it up and out to a graveyard orbit. About half the lift-off weight is fuel, and about 90% of that is used for North-South station-keeping. Once they're in the proper orbit, they drift very little East-West.
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One man's Magic is another man's Engineering. | |
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PolarBear
The bear formerly known as aaron8301
Premium
join:2005-01-03 | Re: Shows what i know..me=dumb Since they're solar powered, couldn't they be maneuvered via electric means? | |
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Healbot
Premium
join:2003-07-16
Vancouver, WA
| Re: Shows what i know..me=dumb said by PolarBear  :Since they're solar powered, couldn't they be maneuvered via electric means? I don't think an electric motor can spin air that doesn't exist. | |
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PolarBear
The bear formerly known as aaron8301
Premium
join:2005-01-03 | Re: Shows what i know..me=dumb Oh sure, you just HAVE to bring up stupid laws of physics... ugh!  | |
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drjim
Premium,MVM
join:2000-06-13
Torrance, CA
clubs:
| Well...."kinda-sorta". Hughes (now Boeing) invented the "XIPS" Xenon-Ion-Propulsion-System which uses electric power to produce a plasma from Xenon liquid. It's very efficient, but still relies on having a tank of *something* to use. Eventually, you run out of "stuff" to use, which renders an otherwise "good" satellite defunct.
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One man's Magic is another man's Engineering. | |
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| bogey780
join:2004-03-19
Here | I don't know if this is the reason but this bird uses 12kW of juice. I imagine the hardiest of powerplants still needs some maintenance. | |
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inteller
Sociopaths always win.
join:2003-12-08
Tulsa, OK | can't wait to see this fireworks show. Europe doesn't have a very good history launching birds into orbit. Can't wait to watch this roman candle go up. | |
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DrModem
Premium
join:2006-10-19
USA | Must you call it broadband? Satellite is not broadband... it is just internet. Just like you wouldn't refer to dialup internet as "Dialup Broadband" | |
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| Brigrat
join:2003-09-01
Lovington, NM | Re: Must you call it broadband? Just out of curiosity, why do you think it is not broadband? it has the same throughput and bandwidth of DSL in many areas, albeit with higher latency? | |
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DrModem
Premium
join:2006-10-19
USA
 ·EarthLink
 ·1and1
 ·PeoplePC
| Re: Must you call it broadband? Broadband in my book:
To be broadband, it must:
- Have data speeds comparable to DSL, Cable etc
- Have latency comparable to decent quality DSL, cable etc (on this, satellite fails)
- Have stability comparable to decent quality DSL, cable etc, which is in my experience with both around 95% uptime (on this, satellite fails: watch it die in fog, rain, snow, sleet, cloud cover, and when you accidentally bump the dish)
- Have stable speeds (on this, satellite fails except at 2am)
- Have priceing comparable to DSL, cable etc (on this, satellite fails: $700+ install anyone? Not to mention from what I've heard from alot of satellite users here, first install usally fails) | |
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| | bogey780
join:2004-03-19
Here | Re: Must you call it broadband? Well broadband had a term before the internet came about. It was then co-opted by the internet crowd. | |
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jfmezei
Premium
join:2007-01-03
Beaconsfield, QC
·ELECTRONICBOX
| Re: Must you call it broadband? The original definition of broadband was the use a medium (such as coax) with have multible separate channels, each operating at different frequency ranges.
This was in contrast with baseband where the medium had one channel encompassing a single frequency range and multiple users shared that one channel either in time division or stat mux.
your residential cable is considered boadband because it carried different channels of information on different frequency ranges. (your analogue TV channels, each on different frequencies, as well as internet service also in its own frequency range).
The term "broadband" for internet came from the fact that the first high speed internet service came from the cable companies whose media (the coax) is used in a broadband fashion.
"broadband" for internet was probably coined by mistake by clueless bimbos on news^H^H^H^Hentertainment channels like CNN etc and the term stuck.
Not all coax is broadband. 3270 terminals used baseband coax, as did ethernet when it was on coax (thin and thick wire).
mobile phones are hybrids. They have multiple channels, each occupying a different frequency range, but each channel also multiplexes different connections (GSM with time division, CDMA with collision detection/retransmission).
Boradband was genereally meant to say that the medium useed a wider spectrum of frequencies versus baseband that used a narrower range of frequencies. | |
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NightHawke
join:2002-02-28
Rockport, TX
| That's a Big Bird When Arianne lofts this one to orbit, it'll break records for the largest single unmanned payload from ground to GEO.
One fun problem they are going to have with this design is the hardening of the processors. I'm certain that it'll be a robust design with plenty of fault tolerance built in. | |
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hayabusa3303
Over 200 mph
Premium
join:2005-06-29
clubs: | Re: That's a Big Bird Arianne 5 will have to be the rocket of choice here. | |
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| voipdabbler
join:2006-04-27
Kalispell, MT
| You're in the sticks on the east coast--makes a big differen netwire,
You're fortunate because you live in "sticks" located on the super-densely populated east coast. Those of us in "sticks" farther west are just lucky to be able to get a cellular signal once and a while, let alone EV-DO. (There are still large areas near me where there is absolutely no cellular coverage.) EV-DO will never be built up out in the large, less-populated west. Outside large urban populations in the west, you'll only possibly see EV-DO along highways. | |
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TMMerlin
The Devil made me do it
join:2003-06-19
Oxford, MI | Re: You're in the sticks on the east coast--makes a big differen Hummm ...wasn't there a Pony Express braodband once upon a time ? | |
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PolarBear
The bear formerly known as aaron8301
Premium
join:2005-01-03
·CableOne
| said by voipdabbler :Those of us in "sticks" farther west are just lucky to be able to get a cellular signal once and a while, let alone EV-DO. (There are still large areas near me where there is absolutely no cellular coverage.) EV-DO will never be built up out in the large, less-populated west. Outside large urban populations in the west, you'll only possibly see EV-DO along highways. I second that, here in rural Washington (yes, you Easterners, Washington is a STATE). That's why Satellite TV and radio are so popular here, too. | |
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| | Brigrat
join:2003-09-01
Lovington, NM | I live in a super rural area of SE New Mexico, and Alltel offers EVDO here... | |
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batterup
I Can Not Tell A Lie.
Premium
join:2003-02-06
Netcong, NJ
clubs: | Question? What was the name of the company that launched the first communication satellite. It just doesn't ring a BELL. | |
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Europe's 'Super Satellite'
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