Frequency Ranges - Fritz! Fon WLAN 7390 Installation, Configuration And Operation

Wireless Network Name (SSID)
2.3

Frequency Ranges

2.4-GHz Frequency
Band
Wireless Network Name (SSID)
Your FRITZ!Box provides two wireless networks in different
frequency bands (2.4 and 5 GHz) at the same time. Upon
delivery, the name of both wireless networks (SSIDs) are
set to "FRITZ!Box Fon WLAN 7390".
Because some WLAN control software, like that provided
by Microsoft for Windows, cannot differentiate between
the frequency band used, it will show only one of the
wireless networks with this SSID as an available remote
partner. If you run into difficulties estblishing WLAN con-
nections, you should assign unique names to the two
wireless networks.
WLAN uses the frequency ranges at 2.4 GHz and 5 GHz as
its transmission range.
With the FRITZ!Box you can establish WLAN connections in
either the 2.4-GHz or the 5-GHz frequency range.
In the 2.4-GHz frequency band WLAN works in the same
range as Bluetooth, microwave devices and various other
devices like radio-controlled toys, garage-door openers
and video bridges. This means that interference may occur
within WLANs operated in the vicinity of such devices.
Generally this has adverse effects on the transmission
rate, including aborted connections.
In the 2.4-GHz frequency range the European regulation
authorities have designated 13 channels for WLAN. A
channel can have a bandwidth of 20 MHz (throughput up
to 130 Mbit/s) or 40 MHz (throughput of up to
300 Mbit/s).
Channels located directly next to each other in the 2.4-
GHz band may overlap and result in mutual interference.
For instance, if several WLANs are operated close to each
other in the 2.4-GHz frequency range with a bandwidth of
20 MHz, a distance of at least five channels should be left
empty between each two channels used. This means that
139