Download 802.11 wireless network site surveying and installation by Bruce Alexander PDF

By Bruce Alexander

802.11 instant community web site Surveying and set up starts off with an creation to WLAN architectures and definitions after which strikes directly to website survey methodologies, aiding you check and tackle your site's particular wishes. The e-book delves into the set up technique for WLAN gear, together with the principles and laws to which WLANs needs to adhere, a variety of stumbling blocks that come up while fitting WLAN gear, and how you can attach WLAN items to the stressed out community. 802.11 instant community website Surveying and deploy is your entire advisor to acting a WLAN web site survey and effectively fitting your 802.11 instant network.This ebook is a part of the Networking know-how sequence from Cisco Press, which deals networking pros beneficial info for developing effective networks, realizing new applied sciences, and construction winning careers.

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Sample text

A wave traveling down either a wire or in the open air has a distinctive physical characteristic to it: its length. One relationship that occurs in RF is that as the oscillations or frequency of a wave becomes faster, the overall length of the associated wave (called wavelength) becomes shorter. As frequencies of signals change, they are affected differently by the surroundings. In a wire, as electrons travel down the conductor, they have opposition called resistance. As the frequency of that electrical signal increases, the electrons in the wire are moving faster and faster.

The size of the balloon represents the amount of RF energy that the transmitter is sending to the antennas, and the antenna is converting the energy to radiated RF energy. As you learn about other antenna types, you will see that the overall energy radiated from the antenna is not increased, it is just redirected. As was the case with the dipole antenna discussed earlier in this chapter, this perfect round balloon of energy that an isotropic antenna provides becomes something totally different in shape.

This way both APs could properly handle the RF traffic, and each AP could use the higher-gain Yagi antenna to cover each area. S. regulations, the FCC added a regulation requiring connectors used on WLAN equipment manufactured after June 1994 to be of a "unique and non-standard" format. Canada followed suit with a similar regulation. Most WLAN vendors such as Cisco worked with connector companies to produce connectors that, while maintaining a quality 50-ohm low-loss connection, met this regulation.

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