User Documentation
2053260000/05/201564
Planning
c) Channels
The standard 802.11b/g is the most widely used standard and has a frequency
range of 2.4 GHz to 2.4835 GHz. The frequency ranges divide as following
among the individual channels:
Channel Frequency Country
1 2.412GHz Europe,USA,Japan
2 2.417GHz Europe,USA,Japan
3 2.422GHz Europe,USA,Japan
4 2.427GHz Europe,USA,Japan
5 2.432GHz Europe,USA,Japan
6 2.437GHz Europe,USA,Japan
7 2.442GHz Europe,USA,Japan
8 2.447GHz Europe,USA,Japan
9 2.452GHz Europe,USA,Japan
10 2.457GHz Europe,USA,Japan
11 2.462GHz Europe,USA,Japan
12 2.467GHz Europe,Japan
13 2.472GHz Europe,Japan
14 2.483GHz Japan
d) Range
The permitted radiated power of conventional WLAN terminals is 100 mW.
• The usual range is 30m to 25 km depending on the hardware and the
application.
• The range depends ultimately on obstacles,and the type and shape of
construction.
• Metallic infrastructure cannot be penetrated and increases the attenuation; so
too does masonry or concrete walls.