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Tech Head - The Technology Section
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<blockquote data-quote="Terryl" data-source="post: 973076" data-attributes="member: 369937"><p>You also need to remember that it is a two way street, you may be able to pick up that WIFI signal but can your little 200 mW signal get back to it?</p><p></p><p>If you go and attach the antenna to your computers WIFI card with coax longer then ten feet you will suffer tremendous signal loss as most WIFI signals at 2.5 GHz have problems with standard coax, that is why I went to the WIFI USB interface, the coax used in my project was about a foot long.</p><p></p><p>Most home brew antennas do not provide signal gain to compensate for the coax loss at 2.5 GHz.</p><p></p><p>The better WIFI antennas now have the WIFI interface located right at the antenna it's self, my internet service uses a 5 GHz antenna with the active stuff right at the antenna, then all is run down CAT6 to a POE device that has a LAN connection on it, works great, signal path is about 4.5 miles to the repeater.</p></blockquote><p></p>
[QUOTE="Terryl, post: 973076, member: 369937"] You also need to remember that it is a two way street, you may be able to pick up that WIFI signal but can your little 200 mW signal get back to it? If you go and attach the antenna to your computers WIFI card with coax longer then ten feet you will suffer tremendous signal loss as most WIFI signals at 2.5 GHz have problems with standard coax, that is why I went to the WIFI USB interface, the coax used in my project was about a foot long. Most home brew antennas do not provide signal gain to compensate for the coax loss at 2.5 GHz. The better WIFI antennas now have the WIFI interface located right at the antenna it's self, my internet service uses a 5 GHz antenna with the active stuff right at the antenna, then all is run down CAT6 to a POE device that has a LAN connection on it, works great, signal path is about 4.5 miles to the repeater. [/QUOTE]
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