August 2003
Intermediate to advanced
224 pages
5h 32m
English
book
How Secure Is Your Wireless Network? Safeguarding Your Wi-Fi LAN
by CCNA Lee Barken - CISSP MCP CPA
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Different Kinds of Antennae
Antennae have a variety of properties that define their operation and performance characteristics.
Frequency: Each antenna is tuned to a specific frequency by virtue of its size. You must match the frequency of the radio with the size of the antenna.
Power: Antennae are rated with a maximum power capacity (in terms of watts). Note, however, that given the relatively small power output of a typical WLAN radio, this is hardly ever a consideration. Most antennae are rated to withstand several watts of power, whereas most WLAN applications operate in the 30-100 milliwatt (mW) range.
Direction: Each antenna shapes the energy field in a particular direction. This pattern is often plotted in multiple dimensions to help visualize ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.