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Appendix B WiFi Fundamentals
Spectrum Differences
WiFi Advisor Wireless LAN Analyzer User’s Guide
December 2014
22073751, Rev. 002
Page 53
5 GHz Spectrum
A lot of these frequencies are used for satellite communications (low power). That
means to them, WiFi is the interferer. U-NII stands for Unlicensed National Informa-
tion Infrastructure and was set aside primarily for WiFi use. Most of the world uses
the spectrum from 5.18 – 5.835 GHz. Note that another ISM band exists here (cord-
less telephones, point-to-point radios, baby monitors).
provides a map of the channel allocation for the 5 Ghz spectrum.
Figure 17
5G channel allocation
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