Fritz! Box 7490 Installation And Operation Manual page 112

Wireless LAN—Getting Technical
2.4 GHz and 5 GHz
The FRITZ!Box works in the wireless network in the 2.4-GHz
range and parallel in the 5-GHz range. Both frequency ranges
can be used simultaneously for wireless LAN connections.
This means you always have the optimum data connection at
your disposal:
For applications that rely on a steady, high throughput rate
("streaming"), use the 5-GHz frequency band. This radio
band provides more channels, and these channels do not
overlap, as well as experiencing significantly less external in-
terference.
For applications that require a low to normal throughput rate
(for instance, reading and writing e-mail), use the 2.4-GHz fre-
quency band.
Bandwidth
Depending on which generation of the IEEE 802.11n standard
is used, the FRITZ!Box can transport 300 to 450 Mbit/s over
wireless LAN. Up to 1300 Mbit/s are possible with the
IEEE 802.11ac standard. If not enough space is available in
the radio spectrum to allow interference-free transmission on
the channel with bandwidth of 40/80 MHz, the FRITZ!Box au-
tomatically reduces bandwidths to 20/40 MHz ("fallback")
with a correspondingly lower transmission capacity.
Standard
802.11ac
802.11n
802.11a
For connections in accordance with the 802.11ac standard
with three separate data streams (three antennas), higher da-
ta throughput can be achieved with greater bandwidth:
Bandwidth (MHz)
20
40
80
FRITZ!Box 7490
Channel Bandwidth (MHz)
Automatic selection of 20, 40 or 80
Automatic selection of 20 or 40
20 (always)
Maximum Data Throughput (Mbit/s)
216
450
1300
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