FRITZ!Box 6490 Cable Service - Knowledge Base

FRITZ!Box 6490 Cable Service
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Slow wireless connection according to 802.11ac

The data rate of a wireless connection (WiFi) according to the wireless standard 802.11ac is lower than allowed by the wireless standard.

Simply proceed as described below. After each measure, check whether the problem is solved.

1 Establishing a wireless connection to the 5 GHz frequency band

The maximum data rate can only be reached when the wireless connection is established to the 5 GHz frequency band and the FRITZ!Box uses the wireless standard 802.11ac:

Enabling the 5 GHz frequency band

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Network" in the "Wireless" ("WLAN") menu.
  3. Enable the option "5 GHz frequency band active" in the "Active frequency bands" section.
  4. Click "Apply" to save the settings.

Configuring the wireless standard "802.11n+ac"

In the factory setting, the wireless standard 802.11ac is configured for the 5 GHz frequency band in the FRITZ!Box. If you changed the FRITZ!Box's wireless settings, configure the following settings:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Adjust radio channel settings".
  4. Click "Additional Settings".
  5. Select the wireless standard "802.11n+ac" from the drop-down list "Radio channel in 5-GHz Frequency".
  6. Click "Apply" to save the settings.

2 Installing the latest FRITZ!OS for the FRITZ!Box

  1. Install the latest FRITZ!OS on the FRITZ!Box.

3 Installing the latest software for the wireless device

  1. Install the latest driver for the computer's wireless network adapter (for example using Windows Update) or the latest operating system (for example Android, iOS) for the wireless device.

    Note:Information on the update can be obtained from the device's manufacturer, for example refer to the manual. You can find the latest drivers for the FRITZ!WLAN Sticks in our download area.

4 Automatically configuring wireless channel settings

Configure the following settings so that the FRITZ!Box checks the wireless environment at regular intervals and automatically selects the best wireless channel settings:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Set radio channel settings automatically (recommended)".
  4. Click "Apply" to save the settings. Now wireless connections to the FRITZ!Box are briefly cleared and then automatically reestablished.

5 Finding the ideal location for the FRITZ!Box

  1. If possible, place the FRITZ!Box in a central location. FRITZ!Box has omnidirectional antennas. The wireless signal is therefore emitted spherically in all directions.
  2. Do not place the FRITZ!Box directly in the corner of a room.
  3. Place the FRITZ!Box so that it is as unobstructed as possible, i.e. not directly in back of or under an obstacle such as pieces of furniture or a heater.
  4. Place the FRITZ!Box as high in the room as possible, for example on a shelf.
  5. Place the FRITZ!Box so that there are as few obstacles as possible between it and the wireless devices. Even small objects in the immediate vicinity of your FRITZ!Box can greatly reduce the coverage area of the wireless signal. Metallic objects or objects containing water, for example radiators, refrigerators, or even houseplants, significantly reduce the quality of the wireless signal.
  6. Place the FRITZ!Box away from other radio transmitters, for example microwaves, wireless speakers, or Bluetooth devices.

Now the FRITZ!Box and wireless device are ideally configured. You will now achieve the greatest possible wireless range and highest possible data rate between your wireless device and the FRITZ!Box.

NoteIf these measures do not sufficiently improve the quality of the wireless connection, you can use a FRITZ!Repeater in accordance with wireless standard 802.11ac to increase the range of the wireless network and the throughput of the wireless connection.