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New social and personal dynamics are being created every day because of wireless. This book attempts to examine the practical exploitation of wireless networking. The projects here will help you get an understanding of the driving force behind the revolution...
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ISBN 0764558943

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New World's Record for Wi-Fi Distance
Posted by Mike on Wednesday, August 4th, 2004 @ 05:24 pm [News]
Amateur engineering took a new turn on July 31, 2004, in the Nevada desert, as three teenage ham radio operators from Ohio took top honors in the 2nd Annual Defcon Wifi Shootout Contest. Held in conjunction with the annual Defcon convention, the contest seeks to discover who can achieve the greatest connected wireless network distance between two computers using the 802.11b Wireless Fidelity (Wifi) protocol.

Using two consumer-grade 32-milliwatt Orinoco Gold USB Wifi adapters mounted on the feed points of two surplus 9-1/2 foot satellite dishes, the team known as P.A.D. achieved a verified connect distance of 55.1 miles (88.67 kilometers), without the use of external amplification.

This surpasses previous records set in the unamplified class, including those of Canarias Wireless of Spain (70.5 kilometers) and Seattle Wireless (61.1 kilometers).

Read more from Wired News and the full release will be available on WiFi-Shootout.com.

I had the good fortune of visiting the event when the winners set their record. Signed copies of Wi-Fi Toys were awarded to the P.A.D. team. Congratulations!

My digipics from the event are below...



Comments
  Very interesting site ! Personally I need to link a digital camera with a laptop, both of them are USB enabled. Can WIFI be able to solve that problem by using 2 common wifi adapters ? The objective is to remote the digital camera (zoom, trigger and see what you get) not in order to transfer high quality pictures. Thank you in advance !!!

Posted by: Eric on Friday, August 6th, 2004 @ 02:01 am
 
 

 
  Wow. Frankly, the Senao 200mW cards beat the pants off those Orinoco 15dBm cards - 8dB better transmit power and at least the same receive gain. They could definitely increase the link with those cards, though with the above dishes I'm sure they're not within FCC limits (then again, the above dishes probably aren't either).

Posted by: Geoff on Tuesday, October 5th, 2004 @ 08:11 am
 
 

 
  They have HAM licenses, so they are within FCC limits, IIRC.

Posted by: Anonymous on Tuesday, October 5th, 2004 @ 08:50 am
 
 

 
  The originally used amplifiers, 600 mw if I recall correctly. But the link was so stable that they decided to try it without amps. They removed the amps from the circuit and still made a successful link with only the Orinoco cards.

Posted by: Mike O on Tuesday, October 5th, 2004 @ 11:03 am
 
 

 
  Just for your info it appears US amateurs can TX with 1500Watts between 2300-2450MHz which covers some of the lower WiFi channels in which case means, they wanted they could TX WiFi at 1500watts!!! In the UK we are only alowed 400Watts. Just imagine.... Hughhhh.... Gav.

Posted by: Gavin Nesbitt (M1BXF) on Sunday, January 30th, 2005 @ 07:30 am
 
 

 
  I was part of the PAD team. Beacause 802.11b is spread spectrum, I am fairly certain we are only allowed 100 watts at the feed point not EIRP. So you will see us out in the desert again on July 29th-31st with bigger dishes and more power. Checkout www.wifiworldrecord.com to donate!

Posted by: Justin on Monday, June 27th, 2005 @ 06:27 am
 
 

 
  I've always been interesting in making a long distance network link work. What goes into making your typical "dish" antenna?

Posted by: D.C. on Thursday, October 20th, 2005 @ 09:52 pm
 


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