Antenna Mode - Series 340 / Series 350 / PC4800 / PC4500
The Cisco Series 350, Series 340, PC4500 and PC4800 support Antenna Diversity
for both transmit and receive, and they are selectable independently for
transmit and receive. You are presented with three options for the type of antenna
you have connected to the Cisco Wireless LAN Adapter. They are as follows:
Antenna Diversity - This allows the Cisco Wireless LAN Adapter to use the
stronger signal from the two antenna ports. Diversity can help the radio maintain
the RF connection in areas of interference. Due to the nature of how RF signals
are affected by the surroundings, one antenna may be in a RF ‘null’ where the signal is very weak, but the other antenna (even though it is only
a small distance away) might not be. Therefore, the Cisco Wireless LAN Adapter
would automatically select the antenna that has the highest signal strength.
This is the recommended setting for the standard snap on antenna.
Right Antenna Only - Choose this option if you want to use the right-hand
antenna port (denoted J1). This tells the Cisco Wireless LAN Adapter not to attempt
to communicate using the left-hand antenna port (J2), since no antenna may
connected to it.
Left Antenna Only - Choose this option if you want to use the left-hand
antenna port (denoted J2). This tells the Cisco Wireless LAN Adapter not to attempt
to communicate using the right-hand antenna port (J1), since no antenna may
connected to it.