System information

Wireless Interface Configuration
Modifying Antenna Settings
Modifying Antenna Settings
When using an external antenna with the access point, you must configure the
radio for the type of external antenna that is attached; either diversity or single.
Also, the access point’s transmit power must be limited to conform to local
regulations. Use the regional settings for each optional antenna and radio
mode as provided in the Transmit Power Control tables below.
When using the access point’s included diversity antennas, the default antenna
settings should be used. The default antenna mode is Diversity and the default
transmit power limits are 100%.
For more information on using an external antenna with the access point, refer
to the Installation and Getting Started Guide.
Ca ut ion An improper combination of transmit power and antenna gain may result in
an EIRP power level in excess of the legally imposed limit. The transmit power
reduction required for each antenna in each radio mode is listed in the
following tables. Failure to adhere to these guidelines may violate the radio
laws for your region.
External Antenna
802.11b Transmit Power Control (TPC) Settings (%)
FCC/IC EU/ETSI Japan Taiwan
L M H L M H L M H L M H
2 dBi Indoor Diversity, J8442A 100 100 100 100 100 100 100 100 100 100 100 100
5 dBi Indoor/Outdoor Omni, J8441A 100 100 100 63 63 63 63 63 63 100 100 100
6.5 dBi Indoor/Outdoor Directional
Diversity, J8445A
79 79 79 32 32 32 100 100 63 79 79 79
7 dBi Indoor/Outdoor Directional,
J8443A
79 79 79 32 32 32 100 100 80 79 79 79
8 dBi Outdoor Omni, J8444A — — — 32 32 32 50 50 50 79 79 79
11 dBi Indoor/Outdoor wide angle
directional, J8446A*
— — — 13 13 20 50 50 25 40 79 40
* Use of this antenna in the EU/ETSI region requires an additional insertion loss of 4 dB for this radio mode.
Insertion loss is made up of added cable, connectors, and lightening arrestors.
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