User's Manual

Radio Interface
6-65
6
Radio Channel – The radio channel that the access point uses to communicate with
wireless clients. When multiple access points are deployed in the same area, set the
channel on neighboring access points at least five channels apart to avoid
interference with each other. For example, in the United States you can deploy up to
three access points in the same area (e.g., channels 1, 6, 11). Also note that the
channel for wireless clients is automatically set to the same as that used by the
access point to which it is linked. (Range: 1-11; Default: 1)
Auto Channel Select – Enables the access point to automatically select an
unoccupied radio channel. (Default: Enabled)
Maximum Station Data Rate – The maximum data rate at which the access
point transmits unicast packets on the wireless interface. The maximum
transmission distance is affected by the data rate. The lower the data rate,
the longer the transmission distance. (Default: 54 Mbps)
Super G – The Atheros proprietary Super G performance enhancements
are supported by the access point. These enhancements include bursting,
compression, fast frames and dynamic turbo. Maximum throughput ranges
between 40 to 60 Mbps for connections to Atheros-compatible clients.
(Default: Disabled)
Preamble – Sets the length of the signal preamble that is used at the start of
a data transmission. (Default: Long)
• Long: Sets the preamble to long (192 microseconds). Using a long preamble
ensures the access point can support all 802.11b and 802.11g clients.
• Short or Long: Sets the preamble according to the capability of clients that are
currently asscociated. Uses a short preamble (96 microseconds) if all associated
clients can support it, otherwise a long preamble is used. The access point can
increase data throughput when using a short preamble, but will only use a short
preamble if it determines that all associated clients support it.