Frequency Ranges
117
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 attempts
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 switches temporarily to a chan-
nel with 20 MHz bandwidth. Greater bandwidth provides for
higher data throughput:
Increasing bandwidths also increases the probability of inter-
ference by wireless networks in the vicinity. Large bandwidths
reduce the frequency range available to other wireless net-
works 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
