Radio settings

Settings relating to the physical radio parameters are configured under Wireless LAN > WLAN networks > Radio settings. By default, there is an entry in the table for every physical WLAN radio for modification as required.





Interface
The internal name of the WLAN radio. This cannot be changed.
Radio band
Shows whether this interface is operating in the 2.4-GHz or 5-GHz frequency range.
5-GHz mode
Here you configure the mode used for 5-GHz radio operation. This directly affects the available data rates. If a restriction is set here, a client attempting to login triggers a check to see whether the modes used by the client match with those configured here. Depending on this, the login is allowed or denied. The following modes are available:
Auto
All modes supported by the device are used.
11an-mixed
The modes 802.11a and 802.11n are used.
11anac-mixed
The modes 802.11a, 802.11n and 802.11ac are used.
11nac-mixed
The modes 802.11n and 802.11ac are used.
11ac-only
Only the 802.11ac mode is used.
11anacax-mixed
The modes 802.11a, 802.11n, 802.11ac and 802.11ax (Wi‑Fi 6) are used.
Note: Maximum compatibility and performance is available by setting the mode to Auto.
Sub-Band
Here you configure which sub-bands are used in the 5-GHz mode. The following sub-bands are available:
Band-1
Only sub-band 1 is used. This corresponds to the WLAN channels 36, 40, 44, 48, 52, 56, 60 and 64.
Band-2
Only sub-band 2 is used. This corresponds to the WLAN channels 100, 104, 108, 112, 116, 132, 136 and 140.
Band-1+2
Both sub-band 1 and sub-band 2 are used.
Note: WLAN channels 120, 124 and 128 are not used because these channels are reserved for the primary user RADAR.
Channel
Here you configure the channel to be used for WLAN radio operations. The value "0" allows the automatic selection of a suitable channel.
Note: In 5-GHz mode, the channel set here represents a preferred channel. However, since the 5-GHz band requires the use of Dynamic Frequency Selection (DFS), there is no guarantee that the preferred channel will actually be used.
2.4-GHz mode
Here you configure the mode used for 2.4-GHz radio operation. This directly affects the available data rates. If a restriction is set here, a client attempting to login triggers a check to see whether the modes used by the client match with those configured here. Depending on this, the login is allowed or denied. The following modes are available:
Auto
All modes supported by the device are used.
11bg-mixed
The modes 802.11b and 802.11g are used.
11g-only
Only the 802.11g mode is used.
11bgn-mixed
The modes 802.11b, 802.11g and 802.11n are used.
11gn-mixed
The modes 802.11g and 802.11n are used.
11bgnax-mixed
The modes 802.11b, 802.11g, 802.11n and 802.11ax (Wi‑Fi 6) are used.
11gnax-mixed
The modes 802.11g, 802.11n and 802.11ax (Wi‑Fi 6) are used.
Note: Maximum compatibility and performance is available by setting the mode to Auto.
Channel List
Here you configure a comma-separated list of further WLAN channels. Automatic channel selection selects a channel from this list, rather than from the full range of supported WLAN channels.
Exclude DFS channels
Here you configure whether to use channels in the 5-GHz band that require Dynamic Frequency Selection (DFS). If these channels are excluded here, the channels still available in the 5-GHz band are 36, 40, 44 and 48. Since DFS is not required for these channels, they can be set with the option Exclude DFS channels in the radio channel and also in the Channel list.
Max. channel bandwidth
Here you configure the maximum allowed channel bandwidth. The following settings are available:
Auto
For a 2.4-GHz radio the channel bandwidth of 20 MHz is always used. For a 5-GHz radio the maximum possible channel bandwidth (up to 160 MHz) is always used, depending on the environment.
20 MHz
The channel bandwidth is always 20 MHz.
40 MHz
Depending on the environment, channel bandwidth is up to 40 MHz, but this can also fall back to 20 MHz.
80 MHz
Depending on the environment, channel bandwidth is up to 80 MHz, but this can also fall back to 40 MHz or 20 MHz.
160 MHz
Depending on the environment, channel bandwidth is up to 160 MHz, but this can also fall back to 80 MHz, 40 MHz or 20 MHz.
Antenna gain
Where the transmission power of an antennae exceeds the levels permitted in the country of operation, the power must be attenuated accordingly. Here you enter the gain of the antenna minus the actual cable loss. For an AirLancer Extender O-18a antenna with a gain of 18 dBi and a 4 m cable with a loss of 1 dB/m, the 'Antenna gain' would be entered as 18 - 4 = 14. This value for true antenna gain is dynamically used to calculate and emit the maximum permissible power with regards to other parameters such as country, data rate and frequency band.
Note: Available for devices with external antennas only.
Power setting
This setting regulates whether to use the maximum permitted transmission power that the access-point hardware can achieve ("Automatic") or to specify the desired target transmission power in manual mode ("Manual"). This is done in dBm in the field TX Power.
TX Power
Depending on the setting in the field Power setting, you set the transmission power in dBm here.
Note: If the hardware of the access point is not capable of the desired transmission power, the maximum possible value is set automatically.
Note: Under no circumstances will the access point exceed the regulatory limits for transmission power. These are always respected automatically, regardless of the settings made here.

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