Operating Instructions and Installation Instructions

Wireless LAN Connection Interrupted
FRITZ!Box 3390 127
Configure Automatic Radio Channel Selection
Configure automatic selection of the radio channel in the
FRITZ!Box. Then the FRITZ!Box will automatically select a ra-
dio channel with as little interference as possible.
1. Open the FRITZ!Box user interface (see page 29).
2. Select “WLAN > Radio Channel”.
3. Enable the option “Set radio channel settings automati-
cally (recommended)”
4. Click “Apply”.
Use the 5-GHz Frequency Band
The FRITZ!Box simultaneously provides one wireless LAN ra-
dio network in the 2.4-GHz frequency band and another in
the 5-GHz band.
The 5-GHz frequency band is subject to less interference than
the 2.4-GHz band. Use the 5-GHz frequency band with any
wireless LAN devices that support this band.
Configure the FRITZ!Box as follows so that you can select the
5-GHz radio network on your wireless LAN devices:
1. Open the FRITZ!Box user interface (see page 29).
2. Enable the advanced view.
Click the “View:” link once to switch between the stan-
dard view and the advanced view.
3. Select “WLAN > Radio Channel”.
4. Enable the 5-GHz frequency band.
5. Assign the 5-GHz radio network a different name from
the 2.4-GHz radio network, for instance “FRITZ!Box
3390_5GHz”.
6. Click “Apply”.
7. Reconnect your wireless LAN devices with the FRITZ!Box.
Wireless LAN devices that support 5 GHz will now find
two FRITZ!Box radio networks when they search for wire-
less access points: the 2.4-GHz radio network and the 5-
GHz radio network.