[HATS] 2.4 gig record claim

[A9xw@cs.com]

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<A HREF="http://www.tvtechnology.com/dlrf/signup.shtml">(Click here to get RF Report via email!)</A> 
Date posted: 2003-12-16 
WSU Sets New IEEE 802.11b 2.4 GHz Distance Record

The 2.4 GHz IEEE 802.11b distance record of 110 km set by <A HREF="http://www.interline.pl/interline.php?s=czytelnia/110km_en">Interline</A> earlier 
this year. (See the Sept. 29 RF Report) has been broken by a team from Weber 
State University's College of Applied Science and Technology Telecommunication 
and Business Education department in Ogden, Utah. The new record, 82 miles or 
132 km, was over a line of sight path from ATK Thiokol at Promontory, west of 
Ogden, to a parking lot at Draper, Utah. 

The precise locations, setup, test procedures and equipment used are 
described on the <A HREF="http://classes.weber.edu/wireless/Project%20Information.htm">Project Information web page</A>. The antennas were two Primestar 2.4 
dishes with biquad feeds. Information on building the feed is posted on Trevor 
Marshall's <A HREF="http://www.trevormarshall.com/biquad.htm">Biquad feed for Primestar dish</A> page. The radios were <A HREF="http://classes.weber.edu/wireless/Specs.htm">Cisco AIR-LMC352 
PCMCIA cards</A> in laptops with a 1.5 watt bidirectional amplifiers from <A HREF="http://www.fab-corp.com/index.htm">
Fleeman, Anderson & Bird</A>. Link speed was 1 Mbps. 

In addition to the project information, photos and lessons learned (including 
"Unsure of FCC regulations" -- legal for Amateur Radio use, may not be legal 
for commercial use) are linked to from the Weber State University <A HREF="http://classes.weber.edu/wireless/Default.htm">Wireless 
Home Page</A>. 

The <A HREF="http://www.trevormarshall.com/">Trevor Marshall PhD - High Technology Demystified</A> page has a wealth of 
information on IEEE 802.11b/g antennas, including construction details on 
slotted waveguide antennas and excellent descriptions on how they work. The <A HREF="http://www.trevormarshall.com/biquad.htm">Biquad 
feed for Primestar dish</A> page also shows how to use the biquad feed as an 
antenna by itself and how to modify it for use on the PCS 1.9 GHz frequencies. Check 
it out! 
    

    
    
 


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