HP procurve 420 Management And Configuration Manual page 107

Using the CLI to Set the Antenna Mode. The following example shows
how to set the antenna mode for the access point when using a non-diversity
antenna.
HP420(config)#interface wireless g
Enter Wireless configuration commands, one per line.
HP420(if-wireless g)#antenna-mode single
HP420(if-wireless g)#
Using the CLI to Set the Transmit Power Control Limits. The follow-
ing example shows how to set the transmit power control limits when using
an external antenna with the access point.
If using the 6.5 dBi Indoor/Outdoor Directional Diversity antenna (J8445A) in
North America with the access point set to dual (b and g) mode, the TPC
settings table for dual mode (see page 5-46) indicates the following settings
are required: 40% for the low channel, 79% for the middle channel, and 40% for
the high channel.
HP420(config)#interface wireless g
Enter Wireless configuration commands, one per line.
HP420(if-wireless g)#transmit-limits 40 79 40
HP420(if-wireless g)#
Access Point Configuration
Modifying Radio Settings
5-49