Configuring Transmit And Receive Antennas - Cisco Aironet 1100 Series Installation And Configuration Manual

Configuring Transmit and Receive Antennas

Beginning in privileged EXEC mode, follow these steps to disable short radio preambles:
Command
Step 1
configure terminal
Step 2 interface dot11radio 0
Step 3 no preamble-short
Step 4 end
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
Use the preamble-short command to enable short preambles if they are disabled.

Configuring Transmit and Receive Antennas

You can select the antenna the access point uses to receive and transmit data. There are three options for
both the receive and the transmit antenna:
•
Note
•
•
Beginning in privileged EXEC mode, follow these steps to select the antennas the access point uses to
receive and transmit data:
Command
Step 1
configure terminal
Step 2 interface dot11radio 0
Step 3 antenna receive
{diversity | left | right}
Step 4
antenna transmit
{diversity | left | right}
Cisco Aironet 1100 Series Access Point Installation and Configuration Guide
7-8
Diversity—This default setting tells the access point to use the antenna that receives the best signal.
If your access point has two fixed (non-removeable) antennas, you should use this setting for both
receive and transmit.
The 1100 series access point has an integrated antenna body that houses two antennas. For best
performance, leave the receive and transmit antenna settings at diversity, the default setting.
Right—If your access point has removeable antennas and you install a high-gain antenna on the
access point's right connector, you should use this setting for both receive and transmit. When you
look at the access point's back panel, the right antenna is on the right.
Left—If your access point has removeable antennas and you install a high-gain antenna on the
access point's left connector, you should use this setting for both receive and transmit. When you
look at the access point's back panel, the left antenna is on the left.
Purpose
Enter global configuration mode.
Enter interface configuration mode for the radio interface.
Disable short preambles and enable long preambles.
Return to privileged EXEC mode.
Purpose
Enter global configuration mode.
Enter interface configuration mode for the radio interface.
Set the receive antenna to diversity, left, or right.
For best performance, leave the receive antenna setting
Note
at the default setting, diversity.
Set the transmit antenna to diversity, left, or right.
Note For best performance, leave the transmit antenna
setting at the default setting, diversity.
Chapter 7 Configuring Radio Settings
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