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Old February 20th 09, 05:52 PM posted to rec.radio.amateur.antenna
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Default Where does high gain antenna get the gain from?

Wireless routers come with small antennas. There are high gain,
non-directional antennas you can buy , like this:
http://www.amazon.com/Linksys-High-A.../dp/B0002F3E9M

If the antenna is directional, I can understand how it could achieve high
gain (by concentrating the radio wave in one direction). But it is
non-directional, so where does the extra gain come from?

 
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