maartena
Stacked.
Premium
join:2002-05-10
Orange, CA
 ·RoadRunner Cable
| reply to NOCMan
Re: Why not for the US?
said by NOCMan  :Only 1W? QUESTION:
What's the power for Cassini's transmitter?
ANSWER from FAQ on June 3, 1999:
It's 20 watts. Received at the DSN antennas, the signal power is 10 to
the -16th (0.0000000000000001) watts. From Saturn, the signal takes
about 1 hour and 20 minutes to reach Earth.
Conclusion: You don't need a whole lot of power to send a signal.... and to receive a signal, you need even less. 
--
"Any society that would give up a little liberty to gain a little security will deserve neither and lose both" -
Benjamin Franklin, Founding Father. |
|
MZR
join:2006-08-12
TX
| reply to NOCMan
I agree with you, but remember,in a sat terminal you are amplifying a wide spectrum(multiple channels). A direcway, any other residential sat setup only needs to amp a small carrier.
It is just like many Wireless ISPs that use 5 and 10MHz channel widths to increase range instead of the standard 20MHz Wi-Fi channels.
I was a direcway customer about 5 years ago and used to lose sync every time a dark cloud got in the way.
BTW, I still have the equipment, If anyone wants it. |
|
exocet_cm
In memory of dadkins
Premium
join:2003-03-23
New Orleans, LA
clubs:  
·Cox HSI
·Suddenlink
 ·Cingular Wireless
 ·AT&T Southeast
·Charter Pipeline
| reply to MrBentor
said by MrBentor :Yuck - do yo really want to use a toothbrush that is several months old? Wait, there is a lifespan on toothbrushes? I don't replace mine till I go to the dentist and I have teeth in great shape and clean too (according to the dentist... and my girlfriend).
--
"I have measured out my life with coffee spoons..." - T.S Eliot
Ma Blog »www.johndball.com
|
|
verolom
join:2002-03-23
Eagleville, PA
·Comcast
| reply to fireflier
Yes, but antennas are hardware. Wi-Fi gear uses a half-dipole with a tiny 2.16 dBi gain and this article claims using existing Wi-Fi gear. Also consider the carrier frequency, noise figure and lack of line-of-sight (multiple reflections).
Allow me to remain a skeptic... |
|
GlennAllen
join:2002-11-17
Richmond, VA | reply to Karl Bode
Two months?! Dude, you're brushin' way too hard. |
|
NOCMan
Verizon Fios User
Premium
join:2004-09-30
Flower Mound, TX
| reply to fireflier
Only 1W? How high up are those satellites? I've ran setups to 23,000miles and we'd have to push a few dozen watts just to get through heavy clouds and a lot more if it was raining really bad.
--
Mac Chatter
»www.macchatter.net |
|
fireflier
Coffee. . .Need Coffee
Premium
join:2001-05-25
Limbo | reply to MZR
Well, that and HIGHLY directional antennas. . . |
|
MZR
join:2006-08-12
TX | reply to verolom
It is possible, LOS is the keyword. Ever thought how the 1W transmitters in the directway satellite systems can reach a satellite that is 22,000 miles away? LOS... |
|
verolom
join:2002-03-23
Eagleville, PA
·Comcast
1 edit | reply to MrBentor
Yes, if I brush my teeth once a month
I'll believe this when I see it. There is no way a 100 mW transmission can traverse 60 miles (line of sight I presume -- useless), especially with all the interference in the 2.4 GHz band. Software is good but not that good. |
|
MrBentor
join:2003-02-18
Seattle, WA | reply to Karl Bode
Yuck - do yo really want to use a toothbrush that is several months old? |
|
Karl Bode
News Guy
join:2000-03-02 | reply to karlmarx
quote:
Why not for the US?
The same reason we can't make toothbrushes that last for more than two months. |
|
karlmarx
join:2006-09-18
iraq
·Fairpoint Communic..
| I can see a great need for this, this would allow people in rural area's to get affordable broadband. The price difference (15,000.00) vs. (700.00) is a no brainer, why anyone would choose wimax is beyond me. Of course, that's assuming this works as advertised..
--
Stick it to the MAN. Support your local torrent sites. Proudly providing 100mb of upstream for all your TV, Movie, and MP3 needs. |
|
