135
Frequency Ranges
2.4 GHz or 5 GHz
The FRITZ!Box works in the WLAN network either in the
2.4-GHz range or in the 5-GHz range, but not parallel in
both frequency ranges at the same time.
Bandwidth
In both frequency ranges you can select between channel
bandwidths of 20 MHz or 40 MHz (exception: channel 140
in the 5-GHz frequency band). The FRITZ!Box initially at-
tempts to select a channel with 40 MHz bandwidth
(throughput up to 300 Mbit/s). If this is not possible due
to interference or channels already being used by other
WLANs in the vicinity, the FRITZ!Box automatically switch-
es temporarily to a channel with 20 MHz bandwidth.
Greater bandwidth provides for higher data throughput:
Increasing bandwidths also increases the probability of
interference by wireless networks in the vicinity. Large
bandwidths reduce the frequency range available to other
wireless networks in the vicinity.
Allocation of the WLAN channels in the 2.4-GHz range:
Bandwidth (MHz)
Maximum Data Throughput (Mbit/s)
20
130
40
300
Channel
Frequency (GHz)
Channel
Frequency (GHz)
1
2.412
8
2.447
2
2.417
9
2.452
3
2.422
10
2.457
4
2.427
11
2.462
5
2.432
12
2.467
6
2.437
13
2.472
7
2.442
