PhoenixDown
-- Wants FIOS
Premium
join:2003-06-08
Fresh Meadows, NY
clubs:   | I wonder if I could do this in nyc
Then I could travel for a good distance around my house without worrying about finding a place to link up. 
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Final Fantasy |
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viperm
Carpe Diem
Premium
join:2002-07-09
Winchester, CA
| This article says they DID use amplification???
Ben Corrado, Andy Meng, Justin Rigling and a fourth friend, Brandon Schamer (who didn't accompany them from Ohio), won the greatest distance achieved for an 802.11b network. The teens, two of them 18 years old and the other 19 years old, achieved 55.1 miles using homebrewed antennas on both ends along with amplification, exceeding last year's winner by 20 miles. |
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sbdjaro
I Dunno
Premium
join:2004-01-29
Grand Junction, CO | »www.tomshardware.com/business/20···-07.html
No amplification. Said they could have gone farther but ran out of road... |
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calvoiper
join:2003-03-31
Belvedere Tiburon, CA
| reply to viperm
said by viperm  :
This article says they DID use amplification???
Ben Corrado, Andy Meng, Justin Rigling and a fourth friend, Brandon Schamer (who didn't accompany them from Ohio), won the greatest distance achieved for an 802.11b network. The teens, two of them 18 years old and the other 19 years old, achieved 55.1 miles using homebrewed antennas on both ends along with amplification, exceeding last year's winner by 20 miles.
Read the next sentence, for crying out loud:
quote:
Then, when they established that record, they turned off their amplifiers and broke the record for an unamplified connection at the same distance.
I really, really detest short attention spans....
Calvoiper
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VoIP--the death knell of remaining voice monopolies! |
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5w WIFI
@207.246.x.x | reply to PhoenixDown
nope... to many buildings sturctures in the way... you will be lucky to get 1000ft |
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NAK
Boot Failure
Premium
join:2000-12-27
Fort Worth, TX
 ·AT&T Southwest
 ·AT&T U-Verse
| I think it's great, but did they do it legally? I seem to remember there is a radiated power limit...meaning that there is a limit to not only the xmitter power but also the transmit antenna gain. You can get enough gain in a dish or a phased Yagi array that you are required to reduce xmt power to stay legal.
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0001 0101 |
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Ronnie123
Premium
join:2003-03-11
Springtown, TX
| The limit for unlicensed 2.4 is 36dbm out the antenna for point to multi-point links.
For point to point links, you can make that quite a bit higher. You start with 30 dbm at the radio and a 6 dbi antenna to get the 36dbm being transmitted. However, in point to point, you can add 3 dbi of gain to the antenna for each one dbm you take off the radio. so if you set the radio to transmit at 24dbm you can add 18 db to the antenna and use a 24 dbi grid, giving you an eirp of 48 dbm.(i am assuming no cable or connector loss between the radio and antenna for simplicity). |
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superdog
I Need A Drink
Premium,MVM
join:2001-07-13
Lebanon, PA
| reply to calvoiper
said by calvoiper :
I really, really detest short attention spans....
Calvoiper
OK Jesus, I am sure that You have never made a mistake?:D
A lot of us are pushed for time?. I am one such person. Perhaps the person in question just skimmed the article and missed the "AMP" part?
Why don't we crucify him?;)
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»www.wavecrazy.net |
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calvoiper
join:2003-03-31
Belvedere Tiburon, CA
| I too am pushed for time, as are other readers of these forums. That's why it's important to make accurate posts so that some greater number of readers aren't confused or forced to again read the original article.
When you think you are pointing out someone else's mistake, as viperm was, it's that much more important to take extra effort to see that you are correct and you aren't wasting other folk's time.
The main reason I posted was to save other readers from doing what I had to do--go back and read the original article. Yes, I was frustrated by wasting that time, and it was reflected in my post.
Calvoiper
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VoIP--the death knell of remaining voice monopolies! |
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superdog
I Need A Drink
Premium,MVM
join:2001-07-13
Lebanon, PA
| said by calvoiper :
The main reason I posted was to save other readers from doing what I had to do--go back and read the original article. Yes, I was frustrated by wasting that time, and it was reflected in my post.
Calvoiper
While I appreciate the fact that Your time is valuable, all of us here make mistakes?, And I thought I would point that out:)
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»www.wavecrazy.net |
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