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Frequency Ranges
Bandwidth
For applications that rely on a steady, high throughput
rate ("streaming"), you should use the 5-GHz frequency
band. This radio band provides more channels, and these
channels do not overlap, as well as experiencing signifi-
cantly less external interference.
For applications that require a low to normal throughput
rate (for instance, reading and writing e-mail), use the 2.4-
GHz frequency band.
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:
Bandwidth (MHz)
20
40
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.
141
Maximum Data Throughput (Mbit/s)
130
300
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